Delete CodeFormer

CodeFormer/.gitattributes

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-*.7z filter=lfs diff=lfs merge=lfs -text
-*.arrow filter=lfs diff=lfs merge=lfs -text
-*.bin filter=lfs diff=lfs merge=lfs -text
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-*.parquet filter=lfs diff=lfs merge=lfs -text
-*.pickle filter=lfs diff=lfs merge=lfs -text
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CodeFormer/CodeFormer/.gitignore

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-.vscode
-
-# ignored files
-version.py
-
-# ignored files with suffix
-*.html
-# *.png
-# *.jpeg
-# *.jpg
-*.pt
-*.gif
-*.pth
-*.dat
-*.zip
-
-# template
-
-# Byte-compiled / optimized / DLL files
-__pycache__/
-*.py[cod]
-*$py.class
-
-# C extensions
-*.so
-
-# Distribution / packaging
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
-
-# PyInstaller
-#  Usually these files are written by a python script from a template
-#  before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
-# Installer logs
-pip-log.txt
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-
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.coverage
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-.cache
-nosetests.xml
-coverage.xml
-*.cover
-.hypothesis/
-.pytest_cache/
-
-# Translations
-*.mo
-*.pot
-
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
-# pyenv
-.python-version
-
-# celery beat schedule file
-celerybeat-schedule
-
-# SageMath parsed files
-*.sage.py
-
-# Environments
-.env
-.venv
-env/
-venv/
-ENV/
-env.bak/
-venv.bak/
-
-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
-# mypy
-.mypy_cache/
-
-# project
-results/
-dlib/
-*.pth
-*_old*
-

CodeFormer/CodeFormer/README.md

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-<p align="center">
-  <img src="assets/CodeFormer_logo.png" height=110>
-</p>
-
-## Towards Robust Blind Face Restoration with Codebook Lookup Transformer
-
-[Paper](https://arxiv.org/abs/2206.11253) | [Project Page](https://shangchenzhou.com/projects/CodeFormer/) | [Video](https://youtu.be/d3VDpkXlueI)
-
-
-<a href="https://colab.research.google.com/drive/1m52PNveE4PBhYrecj34cnpEeiHcC5LTb?usp=sharing"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="google colab logo"></a> [![Replicate](https://img.shields.io/badge/Demo-%F0%9F%9A%80%20Replicate-blue)](https://replicate.com/sczhou/codeformer) ![visitors](https://visitor-badge.glitch.me/badge?page_id=sczhou/CodeFormer)
-
-[Shangchen Zhou](https://shangchenzhou.com/), [Kelvin C.K. Chan](https://ckkelvinchan.github.io/), [Chongyi Li](https://li-chongyi.github.io/), [Chen Change Loy](https://www.mmlab-ntu.com/person/ccloy/) 
-
-S-Lab, Nanyang Technological University
-
-<img src="assets/network.jpg" width="800px"/>
-
-
-:star: If CodeFormer is helpful to your images or projects, please help star this repo. Thanks! :hugs: 
-
-### Update
-
-- **2022.09.09**: Integrated to :rocket: [Replicate](https://replicate.com/). Try out online demo! [![Replicate](https://img.shields.io/badge/Demo-%F0%9F%9A%80%20Replicate-blue)](https://replicate.com/sczhou/codeformer)
-- **2022.09.04**: Add face upsampling `--face_upsample` for high-resolution AI-created face enhancement.
-- **2022.08.23**: Some modifications on face detection and fusion for better AI-created face enhancement.
-- **2022.08.07**: Integrate [Real-ESRGAN](https://github.com/xinntao/Real-ESRGAN) to support background image enhancement.
-- **2022.07.29**: Integrate new face detectors of `['RetinaFace'(default), 'YOLOv5']`. 
-- **2022.07.17**: Add Colab demo of CodeFormer. <a href="https://colab.research.google.com/drive/1m52PNveE4PBhYrecj34cnpEeiHcC5LTb?usp=sharing"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="google colab logo"></a>
-- **2022.07.16**: Release inference code for face restoration. :blush:
-- **2022.06.21**: This repo is created.
-
-### TODO
-- [ ] Add checkpoint for face inpainting
-- [ ] Add training code and config files
-- [x] ~~Add background image enhancement~~
-
-#### Face Restoration
-
-<img src="assets/restoration_result1.png" width="400px"/> <img src="assets/restoration_result2.png" width="400px"/>
-<img src="assets/restoration_result3.png" width="400px"/> <img src="assets/restoration_result4.png" width="400px"/>
-
-#### Face Color Enhancement and Restoration
-
-<img src="assets/color_enhancement_result1.png" width="400px"/> <img src="assets/color_enhancement_result2.png" width="400px"/>
-
-#### Face Inpainting
-
-<img src="assets/inpainting_result1.png" width="400px"/> <img src="assets/inpainting_result2.png" width="400px"/>
-
-
-
-### Dependencies and Installation
-
-- Pytorch >= 1.7.1
-- CUDA >= 10.1
-- Other required packages in `requirements.txt`
-```
-# git clone this repository
-git clone https://github.com/sczhou/CodeFormer
-cd CodeFormer
-
-# create new anaconda env
-conda create -n codeformer python=3.8 -y
-conda activate codeformer
-
-# install python dependencies
-pip3 install -r requirements.txt
-python basicsr/setup.py develop
-```
-<!-- conda install -c conda-forge dlib -->
-
-### Quick Inference
-
-##### Download Pre-trained Models:
-Download the facelib pretrained models from [[Google Drive](https://drive.google.com/drive/folders/1b_3qwrzY_kTQh0-SnBoGBgOrJ_PLZSKm?usp=sharing) | [OneDrive](https://entuedu-my.sharepoint.com/:f:/g/personal/s200094_e_ntu_edu_sg/EvDxR7FcAbZMp_MA9ouq7aQB8XTppMb3-T0uGZ_2anI2mg?e=DXsJFo)] to the `weights/facelib` folder. You can manually download the pretrained models OR download by runing the following command.
-```
-python scripts/download_pretrained_models.py facelib
-```
-
-Download the CodeFormer pretrained models from [[Google Drive](https://drive.google.com/drive/folders/1CNNByjHDFt0b95q54yMVp6Ifo5iuU6QS?usp=sharing) | [OneDrive](https://entuedu-my.sharepoint.com/:f:/g/personal/s200094_e_ntu_edu_sg/EoKFj4wo8cdIn2-TY2IV6CYBhZ0pIG4kUOeHdPR_A5nlbg?e=AO8UN9)] to the `weights/CodeFormer` folder. You can manually download the pretrained models OR download by runing the following command.
-```
-python scripts/download_pretrained_models.py CodeFormer
-```
-
-##### Prepare Testing Data:
-You can put the testing images in the `inputs/TestWhole` folder. If you would like to test on cropped and aligned faces, you can put them in the `inputs/cropped_faces` folder.
-
-
-##### Testing on Face Restoration:
-```
-# For cropped and aligned faces
-python inference_codeformer.py --w 0.5 --has_aligned --test_path [input folder]
-
-# For the whole images
-# Add '--bg_upsampler realesrgan' to enhance the background regions with Real-ESRGAN
-# Add '--face_upsample' to further upsample restorated face with Real-ESRGAN
-python inference_codeformer.py --w 0.7 --test_path [input folder]
-```
-
-NOTE that *w* is in [0, 1]. Generally, smaller *w* tends to produce a higher-quality result, while larger *w* yields a higher-fidelity result. 
-
-The results will be saved in the `results` folder.
-
-### Citation
-If our work is useful for your research, please consider citing:
-
-    @article{zhou2022codeformer,
-        author = {Zhou, Shangchen and Chan, Kelvin C.K. and Li, Chongyi and Loy, Chen Change},
-        title = {Towards Robust Blind Face Restoration with Codebook Lookup TransFormer},
-        journal = {arXiv preprint arXiv:2206.11253},
-        year = {2022}
-    }
-
-### License
-
-<a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.
-
-### Acknowledgement
-
-This project is based on [BasicSR](https://github.com/XPixelGroup/BasicSR). We also borrow some codes from [Unleashing Transformers](https://github.com/samb-t/unleashing-transformers), [YOLOv5-face](https://github.com/deepcam-cn/yolov5-face), and [FaceXLib](https://github.com/xinntao/facexlib). Thanks for their awesome works.
-
-### Contact
-If you have any question, please feel free to reach me out at `[email protected]`.

CodeFormer/CodeFormer/basicsr/VERSION

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-1.3.2

CodeFormer/CodeFormer/basicsr/__init__.py

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-# https://github.com/xinntao/BasicSR
-# flake8: noqa
-from .archs import *
-from .data import *
-from .losses import *
-from .metrics import *
-from .models import *
-from .ops import *
-from .train import *
-from .utils import *
-from .version import __gitsha__, __version__

CodeFormer/CodeFormer/basicsr/archs/__init__.py

@@ -1,25 +0,0 @@
-import importlib
-from copy import deepcopy
-from os import path as osp
-
-from basicsr.utils import get_root_logger, scandir
-from basicsr.utils.registry import ARCH_REGISTRY
-
-__all__ = ['build_network']
-
-# automatically scan and import arch modules for registry
-# scan all the files under the 'archs' folder and collect files ending with
-# '_arch.py'
-arch_folder = osp.dirname(osp.abspath(__file__))
-arch_filenames = [osp.splitext(osp.basename(v))[0] for v in scandir(arch_folder) if v.endswith('_arch.py')]
-# import all the arch modules
-_arch_modules = [importlib.import_module(f'basicsr.archs.{file_name}') for file_name in arch_filenames]
-
-
-def build_network(opt):
-    opt = deepcopy(opt)
-    network_type = opt.pop('type')
-    net = ARCH_REGISTRY.get(network_type)(**opt)
-    logger = get_root_logger()
-    logger.info(f'Network [{net.__class__.__name__}] is created.')
-    return net

CodeFormer/CodeFormer/basicsr/archs/arcface_arch.py

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-import torch.nn as nn
-from basicsr.utils.registry import ARCH_REGISTRY
-
-
-def conv3x3(inplanes, outplanes, stride=1):
-    """A simple wrapper for 3x3 convolution with padding.
-
-    Args:
-        inplanes (int): Channel number of inputs.
-        outplanes (int): Channel number of outputs.
-        stride (int): Stride in convolution. Default: 1.
-    """
-    return nn.Conv2d(inplanes, outplanes, kernel_size=3, stride=stride, padding=1, bias=False)
-
-
-class BasicBlock(nn.Module):
-    """Basic residual block used in the ResNetArcFace architecture.
-
-    Args:
-        inplanes (int): Channel number of inputs.
-        planes (int): Channel number of outputs.
-        stride (int): Stride in convolution. Default: 1.
-        downsample (nn.Module): The downsample module. Default: None.
-    """
-    expansion = 1  # output channel expansion ratio
-
-    def __init__(self, inplanes, planes, stride=1, downsample=None):
-        super(BasicBlock, self).__init__()
-        self.conv1 = conv3x3(inplanes, planes, stride)
-        self.bn1 = nn.BatchNorm2d(planes)
-        self.relu = nn.ReLU(inplace=True)
-        self.conv2 = conv3x3(planes, planes)
-        self.bn2 = nn.BatchNorm2d(planes)
-        self.downsample = downsample
-        self.stride = stride
-
-    def forward(self, x):
-        residual = x
-
-        out = self.conv1(x)
-        out = self.bn1(out)
-        out = self.relu(out)
-
-        out = self.conv2(out)
-        out = self.bn2(out)
-
-        if self.downsample is not None:
-            residual = self.downsample(x)
-
-        out += residual
-        out = self.relu(out)
-
-        return out
-
-
-class IRBlock(nn.Module):
-    """Improved residual block (IR Block) used in the ResNetArcFace architecture.
-
-    Args:
-        inplanes (int): Channel number of inputs.
-        planes (int): Channel number of outputs.
-        stride (int): Stride in convolution. Default: 1.
-        downsample (nn.Module): The downsample module. Default: None.
-        use_se (bool): Whether use the SEBlock (squeeze and excitation block). Default: True.
-    """
-    expansion = 1  # output channel expansion ratio
-
-    def __init__(self, inplanes, planes, stride=1, downsample=None, use_se=True):
-        super(IRBlock, self).__init__()
-        self.bn0 = nn.BatchNorm2d(inplanes)
-        self.conv1 = conv3x3(inplanes, inplanes)
-        self.bn1 = nn.BatchNorm2d(inplanes)
-        self.prelu = nn.PReLU()
-        self.conv2 = conv3x3(inplanes, planes, stride)
-        self.bn2 = nn.BatchNorm2d(planes)
-        self.downsample = downsample
-        self.stride = stride
-        self.use_se = use_se
-        if self.use_se:
-            self.se = SEBlock(planes)
-
-    def forward(self, x):
-        residual = x
-        out = self.bn0(x)
-        out = self.conv1(out)
-        out = self.bn1(out)
-        out = self.prelu(out)
-
-        out = self.conv2(out)
-        out = self.bn2(out)
-        if self.use_se:
-            out = self.se(out)
-
-        if self.downsample is not None:
-            residual = self.downsample(x)
-
-        out += residual
-        out = self.prelu(out)
-
-        return out
-
-
-class Bottleneck(nn.Module):
-    """Bottleneck block used in the ResNetArcFace architecture.
-
-    Args:
-        inplanes (int): Channel number of inputs.
-        planes (int): Channel number of outputs.
-        stride (int): Stride in convolution. Default: 1.
-        downsample (nn.Module): The downsample module. Default: None.
-    """
-    expansion = 4  # output channel expansion ratio
-
-    def __init__(self, inplanes, planes, stride=1, downsample=None):
-        super(Bottleneck, self).__init__()
-        self.conv1 = nn.Conv2d(inplanes, planes, kernel_size=1, bias=False)
-        self.bn1 = nn.BatchNorm2d(planes)
-        self.conv2 = nn.Conv2d(planes, planes, kernel_size=3, stride=stride, padding=1, bias=False)
-        self.bn2 = nn.BatchNorm2d(planes)
-        self.conv3 = nn.Conv2d(planes, planes * self.expansion, kernel_size=1, bias=False)
-        self.bn3 = nn.BatchNorm2d(planes * self.expansion)
-        self.relu = nn.ReLU(inplace=True)
-        self.downsample = downsample
-        self.stride = stride
-
-    def forward(self, x):
-        residual = x
-
-        out = self.conv1(x)
-        out = self.bn1(out)
-        out = self.relu(out)
-
-        out = self.conv2(out)
-        out = self.bn2(out)
-        out = self.relu(out)
-
-        out = self.conv3(out)
-        out = self.bn3(out)
-
-        if self.downsample is not None:
-            residual = self.downsample(x)
-
-        out += residual
-        out = self.relu(out)
-
-        return out
-
-
-class SEBlock(nn.Module):
-    """The squeeze-and-excitation block (SEBlock) used in the IRBlock.
-
-    Args:
-        channel (int): Channel number of inputs.
-        reduction (int): Channel reduction ration. Default: 16.
-    """
-
-    def __init__(self, channel, reduction=16):
-        super(SEBlock, self).__init__()
-        self.avg_pool = nn.AdaptiveAvgPool2d(1)  # pool to 1x1 without spatial information
-        self.fc = nn.Sequential(
-            nn.Linear(channel, channel // reduction), nn.PReLU(), nn.Linear(channel // reduction, channel),
-            nn.Sigmoid())
-
-    def forward(self, x):
-        b, c, _, _ = x.size()
-        y = self.avg_pool(x).view(b, c)
-        y = self.fc(y).view(b, c, 1, 1)
-        return x * y
-
-
-@ARCH_REGISTRY.register()
-class ResNetArcFace(nn.Module):
-    """ArcFace with ResNet architectures.
-
-    Ref: ArcFace: Additive Angular Margin Loss for Deep Face Recognition.
-
-    Args:
-        block (str): Block used in the ArcFace architecture.
-        layers (tuple(int)): Block numbers in each layer.
-        use_se (bool): Whether use the SEBlock (squeeze and excitation block). Default: True.
-    """
-
-    def __init__(self, block, layers, use_se=True):
-        if block == 'IRBlock':
-            block = IRBlock
-        self.inplanes = 64
-        self.use_se = use_se
-        super(ResNetArcFace, self).__init__()
-
-        self.conv1 = nn.Conv2d(1, 64, kernel_size=3, padding=1, bias=False)
-        self.bn1 = nn.BatchNorm2d(64)
-        self.prelu = nn.PReLU()
-        self.maxpool = nn.MaxPool2d(kernel_size=2, stride=2)
-        self.layer1 = self._make_layer(block, 64, layers[0])
-        self.layer2 = self._make_layer(block, 128, layers[1], stride=2)
-        self.layer3 = self._make_layer(block, 256, layers[2], stride=2)
-        self.layer4 = self._make_layer(block, 512, layers[3], stride=2)
-        self.bn4 = nn.BatchNorm2d(512)
-        self.dropout = nn.Dropout()
-        self.fc5 = nn.Linear(512 * 8 * 8, 512)
-        self.bn5 = nn.BatchNorm1d(512)
-
-        # initialization
-        for m in self.modules():
-            if isinstance(m, nn.Conv2d):
-                nn.init.xavier_normal_(m.weight)
-            elif isinstance(m, nn.BatchNorm2d) or isinstance(m, nn.BatchNorm1d):
-                nn.init.constant_(m.weight, 1)
-                nn.init.constant_(m.bias, 0)
-            elif isinstance(m, nn.Linear):
-                nn.init.xavier_normal_(m.weight)
-                nn.init.constant_(m.bias, 0)
-
-    def _make_layer(self, block, planes, num_blocks, stride=1):
-        downsample = None
-        if stride != 1 or self.inplanes != planes * block.expansion:
-            downsample = nn.Sequential(
-                nn.Conv2d(self.inplanes, planes * block.expansion, kernel_size=1, stride=stride, bias=False),
-                nn.BatchNorm2d(planes * block.expansion),
-            )
-        layers = []
-        layers.append(block(self.inplanes, planes, stride, downsample, use_se=self.use_se))
-        self.inplanes = planes
-        for _ in range(1, num_blocks):
-            layers.append(block(self.inplanes, planes, use_se=self.use_se))
-
-        return nn.Sequential(*layers)
-
-    def forward(self, x):
-        x = self.conv1(x)
-        x = self.bn1(x)
-        x = self.prelu(x)
-        x = self.maxpool(x)
-
-        x = self.layer1(x)
-        x = self.layer2(x)
-        x = self.layer3(x)
-        x = self.layer4(x)
-        x = self.bn4(x)
-        x = self.dropout(x)
-        x = x.view(x.size(0), -1)
-        x = self.fc5(x)
-        x = self.bn5(x)
-
-        return x

CodeFormer/CodeFormer/basicsr/archs/arch_util.py

@@ -1,318 +0,0 @@
-import collections.abc
-import math
-import torch
-import torchvision
-import warnings
-from distutils.version import LooseVersion
-from itertools import repeat
-from torch import nn as nn
-from torch.nn import functional as F
-from torch.nn import init as init
-from torch.nn.modules.batchnorm import _BatchNorm
-
-from basicsr.ops.dcn import ModulatedDeformConvPack, modulated_deform_conv
-from basicsr.utils import get_root_logger
-
-
-@torch.no_grad()
-def default_init_weights(module_list, scale=1, bias_fill=0, **kwargs):
-    """Initialize network weights.
-
-    Args:
-        module_list (list[nn.Module] | nn.Module): Modules to be initialized.
-        scale (float): Scale initialized weights, especially for residual
-            blocks. Default: 1.
-        bias_fill (float): The value to fill bias. Default: 0
-        kwargs (dict): Other arguments for initialization function.
-    """
-    if not isinstance(module_list, list):
-        module_list = [module_list]
-    for module in module_list:
-        for m in module.modules():
-            if isinstance(m, nn.Conv2d):
-                init.kaiming_normal_(m.weight, **kwargs)
-                m.weight.data *= scale
-                if m.bias is not None:
-                    m.bias.data.fill_(bias_fill)
-            elif isinstance(m, nn.Linear):
-                init.kaiming_normal_(m.weight, **kwargs)
-                m.weight.data *= scale
-                if m.bias is not None:
-                    m.bias.data.fill_(bias_fill)
-            elif isinstance(m, _BatchNorm):
-                init.constant_(m.weight, 1)
-                if m.bias is not None:
-                    m.bias.data.fill_(bias_fill)
-
-
-def make_layer(basic_block, num_basic_block, **kwarg):
-    """Make layers by stacking the same blocks.
-
-    Args:
-        basic_block (nn.module): nn.module class for basic block.
-        num_basic_block (int): number of blocks.
-
-    Returns:
-        nn.Sequential: Stacked blocks in nn.Sequential.
-    """
-    layers = []
-    for _ in range(num_basic_block):
-        layers.append(basic_block(**kwarg))
-    return nn.Sequential(*layers)
-
-
-class ResidualBlockNoBN(nn.Module):
-    """Residual block without BN.
-
-    It has a style of:
-        ---Conv-ReLU-Conv-+-
-         |________________|
-
-    Args:
-        num_feat (int): Channel number of intermediate features.
-            Default: 64.
-        res_scale (float): Residual scale. Default: 1.
-        pytorch_init (bool): If set to True, use pytorch default init,
-            otherwise, use default_init_weights. Default: False.
-    """
-
-    def __init__(self, num_feat=64, res_scale=1, pytorch_init=False):
-        super(ResidualBlockNoBN, self).__init__()
-        self.res_scale = res_scale
-        self.conv1 = nn.Conv2d(num_feat, num_feat, 3, 1, 1, bias=True)
-        self.conv2 = nn.Conv2d(num_feat, num_feat, 3, 1, 1, bias=True)
-        self.relu = nn.ReLU(inplace=True)
-
-        if not pytorch_init:
-            default_init_weights([self.conv1, self.conv2], 0.1)
-
-    def forward(self, x):
-        identity = x
-        out = self.conv2(self.relu(self.conv1(x)))
-        return identity + out * self.res_scale
-
-
-class Upsample(nn.Sequential):
-    """Upsample module.
-
-    Args:
-        scale (int): Scale factor. Supported scales: 2^n and 3.
-        num_feat (int): Channel number of intermediate features.
-    """
-
-    def __init__(self, scale, num_feat):
-        m = []
-        if (scale & (scale - 1)) == 0:  # scale = 2^n
-            for _ in range(int(math.log(scale, 2))):
-                m.append(nn.Conv2d(num_feat, 4 * num_feat, 3, 1, 1))
-                m.append(nn.PixelShuffle(2))
-        elif scale == 3:
-            m.append(nn.Conv2d(num_feat, 9 * num_feat, 3, 1, 1))
-            m.append(nn.PixelShuffle(3))
-        else:
-            raise ValueError(f'scale {scale} is not supported. Supported scales: 2^n and 3.')
-        super(Upsample, self).__init__(*m)
-
-
-def flow_warp(x, flow, interp_mode='bilinear', padding_mode='zeros', align_corners=True):
-    """Warp an image or feature map with optical flow.
-
-    Args:
-        x (Tensor): Tensor with size (n, c, h, w).
-        flow (Tensor): Tensor with size (n, h, w, 2), normal value.
-        interp_mode (str): 'nearest' or 'bilinear'. Default: 'bilinear'.
-        padding_mode (str): 'zeros' or 'border' or 'reflection'.
-            Default: 'zeros'.
-        align_corners (bool): Before pytorch 1.3, the default value is
-            align_corners=True. After pytorch 1.3, the default value is
-            align_corners=False. Here, we use the True as default.
-
-    Returns:
-        Tensor: Warped image or feature map.
-    """
-    assert x.size()[-2:] == flow.size()[1:3]
-    _, _, h, w = x.size()
-    # create mesh grid
-    grid_y, grid_x = torch.meshgrid(torch.arange(0, h).type_as(x), torch.arange(0, w).type_as(x))
-    grid = torch.stack((grid_x, grid_y), 2).float()  # W(x), H(y), 2
-    grid.requires_grad = False
-
-    vgrid = grid + flow
-    # scale grid to [-1,1]
-    vgrid_x = 2.0 * vgrid[:, :, :, 0] / max(w - 1, 1) - 1.0
-    vgrid_y = 2.0 * vgrid[:, :, :, 1] / max(h - 1, 1) - 1.0
-    vgrid_scaled = torch.stack((vgrid_x, vgrid_y), dim=3)
-    output = F.grid_sample(x, vgrid_scaled, mode=interp_mode, padding_mode=padding_mode, align_corners=align_corners)
-
-    # TODO, what if align_corners=False
-    return output
-
-
-def resize_flow(flow, size_type, sizes, interp_mode='bilinear', align_corners=False):
-    """Resize a flow according to ratio or shape.
-
-    Args:
-        flow (Tensor): Precomputed flow. shape [N, 2, H, W].
-        size_type (str): 'ratio' or 'shape'.
-        sizes (list[int | float]): the ratio for resizing or the final output
-            shape.
-            1) The order of ratio should be [ratio_h, ratio_w]. For
-            downsampling, the ratio should be smaller than 1.0 (i.e., ratio
-            < 1.0). For upsampling, the ratio should be larger than 1.0 (i.e.,
-            ratio > 1.0).
-            2) The order of output_size should be [out_h, out_w].
-        interp_mode (str): The mode of interpolation for resizing.
-            Default: 'bilinear'.
-        align_corners (bool): Whether align corners. Default: False.
-
-    Returns:
-        Tensor: Resized flow.
-    """
-    _, _, flow_h, flow_w = flow.size()
-    if size_type == 'ratio':
-        output_h, output_w = int(flow_h * sizes[0]), int(flow_w * sizes[1])
-    elif size_type == 'shape':
-        output_h, output_w = sizes[0], sizes[1]
-    else:
-        raise ValueError(f'Size type should be ratio or shape, but got type {size_type}.')
-
-    input_flow = flow.clone()
-    ratio_h = output_h / flow_h
-    ratio_w = output_w / flow_w
-    input_flow[:, 0, :, :] *= ratio_w
-    input_flow[:, 1, :, :] *= ratio_h
-    resized_flow = F.interpolate(
-        input=input_flow, size=(output_h, output_w), mode=interp_mode, align_corners=align_corners)
-    return resized_flow
-
-
-# TODO: may write a cpp file
-def pixel_unshuffle(x, scale):
-    """ Pixel unshuffle.
-
-    Args:
-        x (Tensor): Input feature with shape (b, c, hh, hw).
-        scale (int): Downsample ratio.
-
-    Returns:
-        Tensor: the pixel unshuffled feature.
-    """
-    b, c, hh, hw = x.size()
-    out_channel = c * (scale**2)
-    assert hh % scale == 0 and hw % scale == 0
-    h = hh // scale
-    w = hw // scale
-    x_view = x.view(b, c, h, scale, w, scale)
-    return x_view.permute(0, 1, 3, 5, 2, 4).reshape(b, out_channel, h, w)
-
-
-class DCNv2Pack(ModulatedDeformConvPack):
-    """Modulated deformable conv for deformable alignment.
-
-    Different from the official DCNv2Pack, which generates offsets and masks
-    from the preceding features, this DCNv2Pack takes another different
-    features to generate offsets and masks.
-
-    Ref:
-        Delving Deep into Deformable Alignment in Video Super-Resolution.
-    """
-
-    def forward(self, x, feat):
-        out = self.conv_offset(feat)
-        o1, o2, mask = torch.chunk(out, 3, dim=1)
-        offset = torch.cat((o1, o2), dim=1)
-        mask = torch.sigmoid(mask)
-
-        offset_absmean = torch.mean(torch.abs(offset))
-        if offset_absmean > 50:
-            logger = get_root_logger()
-            logger.warning(f'Offset abs mean is {offset_absmean}, larger than 50.')
-
-        if LooseVersion(torchvision.__version__) >= LooseVersion('0.9.0'):
-            return torchvision.ops.deform_conv2d(x, offset, self.weight, self.bias, self.stride, self.padding,
-                                                 self.dilation, mask)
-        else:
-            return modulated_deform_conv(x, offset, mask, self.weight, self.bias, self.stride, self.padding,
-                                         self.dilation, self.groups, self.deformable_groups)
-
-
-def _no_grad_trunc_normal_(tensor, mean, std, a, b):
-    # From: https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/layers/weight_init.py
-    # Cut & paste from PyTorch official master until it's in a few official releases - RW
-    # Method based on https://people.sc.fsu.edu/~jburkardt/presentations/truncated_normal.pdf
-    def norm_cdf(x):
-        # Computes standard normal cumulative distribution function
-        return (1. + math.erf(x / math.sqrt(2.))) / 2.
-
-    if (mean < a - 2 * std) or (mean > b + 2 * std):
-        warnings.warn(
-            'mean is more than 2 std from [a, b] in nn.init.trunc_normal_. '
-            'The distribution of values may be incorrect.',
-            stacklevel=2)
-
-    with torch.no_grad():
-        # Values are generated by using a truncated uniform distribution and
-        # then using the inverse CDF for the normal distribution.
-        # Get upper and lower cdf values
-        low = norm_cdf((a - mean) / std)
-        up = norm_cdf((b - mean) / std)
-
-        # Uniformly fill tensor with values from [low, up], then translate to
-        # [2l-1, 2u-1].
-        tensor.uniform_(2 * low - 1, 2 * up - 1)
-
-        # Use inverse cdf transform for normal distribution to get truncated
-        # standard normal
-        tensor.erfinv_()
-
-        # Transform to proper mean, std
-        tensor.mul_(std * math.sqrt(2.))
-        tensor.add_(mean)
-
-        # Clamp to ensure it's in the proper range
-        tensor.clamp_(min=a, max=b)
-        return tensor
-
-
-def trunc_normal_(tensor, mean=0., std=1., a=-2., b=2.):
-    r"""Fills the input Tensor with values drawn from a truncated
-    normal distribution.
-
-    From: https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/layers/weight_init.py
-
-    The values are effectively drawn from the
-    normal distribution :math:`\mathcal{N}(\text{mean}, \text{std}^2)`
-    with values outside :math:`[a, b]` redrawn until they are within
-    the bounds. The method used for generating the random values works
-    best when :math:`a \leq \text{mean} \leq b`.
-
-    Args:
-        tensor: an n-dimensional `torch.Tensor`
-        mean: the mean of the normal distribution
-        std: the standard deviation of the normal distribution
-        a: the minimum cutoff value
-        b: the maximum cutoff value
-
-    Examples:
-        >>> w = torch.empty(3, 5)
-        >>> nn.init.trunc_normal_(w)
-    """
-    return _no_grad_trunc_normal_(tensor, mean, std, a, b)
-
-
-# From PyTorch
-def _ntuple(n):
-
-    def parse(x):
-        if isinstance(x, collections.abc.Iterable):
-            return x
-        return tuple(repeat(x, n))
-
-    return parse
-
-
-to_1tuple = _ntuple(1)
-to_2tuple = _ntuple(2)
-to_3tuple = _ntuple(3)
-to_4tuple = _ntuple(4)
-to_ntuple = _ntuple

CodeFormer/CodeFormer/basicsr/archs/codeformer_arch.py

@@ -1,276 +0,0 @@
-import math
-import numpy as np
-import torch
-from torch import nn, Tensor
-import torch.nn.functional as F
-from typing import Optional, List
-
-from basicsr.archs.vqgan_arch import *
-from basicsr.utils import get_root_logger
-from basicsr.utils.registry import ARCH_REGISTRY
-
-def calc_mean_std(feat, eps=1e-5):
-    """Calculate mean and std for adaptive_instance_normalization.
-
-    Args:
-        feat (Tensor): 4D tensor.
-        eps (float): A small value added to the variance to avoid
-            divide-by-zero. Default: 1e-5.
-    """
-    size = feat.size()
-    assert len(size) == 4, 'The input feature should be 4D tensor.'
-    b, c = size[:2]
-    feat_var = feat.view(b, c, -1).var(dim=2) + eps
-    feat_std = feat_var.sqrt().view(b, c, 1, 1)
-    feat_mean = feat.view(b, c, -1).mean(dim=2).view(b, c, 1, 1)
-    return feat_mean, feat_std
-
-
-def adaptive_instance_normalization(content_feat, style_feat):
-    """Adaptive instance normalization.
-
-    Adjust the reference features to have the similar color and illuminations
-    as those in the degradate features.
-
-    Args:
-        content_feat (Tensor): The reference feature.
-        style_feat (Tensor): The degradate features.
-    """
-    size = content_feat.size()
-    style_mean, style_std = calc_mean_std(style_feat)
-    content_mean, content_std = calc_mean_std(content_feat)
-    normalized_feat = (content_feat - content_mean.expand(size)) / content_std.expand(size)
-    return normalized_feat * style_std.expand(size) + style_mean.expand(size)
-
-
-class PositionEmbeddingSine(nn.Module):
-    """
-    This is a more standard version of the position embedding, very similar to the one
-    used by the Attention is all you need paper, generalized to work on images.
-    """
-
-    def __init__(self, num_pos_feats=64, temperature=10000, normalize=False, scale=None):
-        super().__init__()
-        self.num_pos_feats = num_pos_feats
-        self.temperature = temperature
-        self.normalize = normalize
-        if scale is not None and normalize is False:
-            raise ValueError("normalize should be True if scale is passed")
-        if scale is None:
-            scale = 2 * math.pi
-        self.scale = scale
-
-    def forward(self, x, mask=None):
-        if mask is None:
-            mask = torch.zeros((x.size(0), x.size(2), x.size(3)), device=x.device, dtype=torch.bool)
-        not_mask = ~mask
-        y_embed = not_mask.cumsum(1, dtype=torch.float32)
-        x_embed = not_mask.cumsum(2, dtype=torch.float32)
-        if self.normalize:
-            eps = 1e-6
-            y_embed = y_embed / (y_embed[:, -1:, :] + eps) * self.scale
-            x_embed = x_embed / (x_embed[:, :, -1:] + eps) * self.scale
-
-        dim_t = torch.arange(self.num_pos_feats, dtype=torch.float32, device=x.device)
-        dim_t = self.temperature ** (2 * (dim_t // 2) / self.num_pos_feats)
-
-        pos_x = x_embed[:, :, :, None] / dim_t
-        pos_y = y_embed[:, :, :, None] / dim_t
-        pos_x = torch.stack(
-            (pos_x[:, :, :, 0::2].sin(), pos_x[:, :, :, 1::2].cos()), dim=4
-        ).flatten(3)
-        pos_y = torch.stack(
-            (pos_y[:, :, :, 0::2].sin(), pos_y[:, :, :, 1::2].cos()), dim=4
-        ).flatten(3)
-        pos = torch.cat((pos_y, pos_x), dim=3).permute(0, 3, 1, 2)
-        return pos
-
-def _get_activation_fn(activation):
-    """Return an activation function given a string"""
-    if activation == "relu":
-        return F.relu
-    if activation == "gelu":
-        return F.gelu
-    if activation == "glu":
-        return F.glu
-    raise RuntimeError(F"activation should be relu/gelu, not {activation}.")
-
-
-class TransformerSALayer(nn.Module):
-    def __init__(self, embed_dim, nhead=8, dim_mlp=2048, dropout=0.0, activation="gelu"):
-        super().__init__()
-        self.self_attn = nn.MultiheadAttention(embed_dim, nhead, dropout=dropout)
-        # Implementation of Feedforward model - MLP
-        self.linear1 = nn.Linear(embed_dim, dim_mlp)
-        self.dropout = nn.Dropout(dropout)
-        self.linear2 = nn.Linear(dim_mlp, embed_dim)
-
-        self.norm1 = nn.LayerNorm(embed_dim)
-        self.norm2 = nn.LayerNorm(embed_dim)
-        self.dropout1 = nn.Dropout(dropout)
-        self.dropout2 = nn.Dropout(dropout)
-
-        self.activation = _get_activation_fn(activation)
-
-    def with_pos_embed(self, tensor, pos: Optional[Tensor]):
-        return tensor if pos is None else tensor + pos
-
-    def forward(self, tgt,
-                tgt_mask: Optional[Tensor] = None,
-                tgt_key_padding_mask: Optional[Tensor] = None,
-                query_pos: Optional[Tensor] = None):
-        
-        # self attention
-        tgt2 = self.norm1(tgt)
-        q = k = self.with_pos_embed(tgt2, query_pos)
-        tgt2 = self.self_attn(q, k, value=tgt2, attn_mask=tgt_mask,
-                              key_padding_mask=tgt_key_padding_mask)[0]
-        tgt = tgt + self.dropout1(tgt2)
-
-        # ffn
-        tgt2 = self.norm2(tgt)
-        tgt2 = self.linear2(self.dropout(self.activation(self.linear1(tgt2))))
-        tgt = tgt + self.dropout2(tgt2)
-        return tgt
-
-class Fuse_sft_block(nn.Module):
-    def __init__(self, in_ch, out_ch):
-        super().__init__()
-        self.encode_enc = ResBlock(2*in_ch, out_ch)
-
-        self.scale = nn.Sequential(
-                    nn.Conv2d(in_ch, out_ch, kernel_size=3, padding=1),
-                    nn.LeakyReLU(0.2, True),
-                    nn.Conv2d(out_ch, out_ch, kernel_size=3, padding=1))
-
-        self.shift = nn.Sequential(
-                    nn.Conv2d(in_ch, out_ch, kernel_size=3, padding=1),
-                    nn.LeakyReLU(0.2, True),
-                    nn.Conv2d(out_ch, out_ch, kernel_size=3, padding=1))
-
-    def forward(self, enc_feat, dec_feat, w=1):
-        enc_feat = self.encode_enc(torch.cat([enc_feat, dec_feat], dim=1))
-        scale = self.scale(enc_feat)
-        shift = self.shift(enc_feat)
-        residual = w * (dec_feat * scale + shift)
-        out = dec_feat + residual
-        return out
-
-
-@ARCH_REGISTRY.register()
-class CodeFormer(VQAutoEncoder):
-    def __init__(self, dim_embd=512, n_head=8, n_layers=9, 
-                codebook_size=1024, latent_size=256,
-                connect_list=['32', '64', '128', '256'],
-                fix_modules=['quantize','generator']):
-        super(CodeFormer, self).__init__(512, 64, [1, 2, 2, 4, 4, 8], 'nearest',2, [16], codebook_size)
-
-        if fix_modules is not None:
-            for module in fix_modules:
-                for param in getattr(self, module).parameters():
-                    param.requires_grad = False
-
-        self.connect_list = connect_list
-        self.n_layers = n_layers
-        self.dim_embd = dim_embd
-        self.dim_mlp = dim_embd*2
-
-        self.position_emb = nn.Parameter(torch.zeros(latent_size, self.dim_embd))
-        self.feat_emb = nn.Linear(256, self.dim_embd)
-
-        # transformer
-        self.ft_layers = nn.Sequential(*[TransformerSALayer(embed_dim=dim_embd, nhead=n_head, dim_mlp=self.dim_mlp, dropout=0.0) 
-                                    for _ in range(self.n_layers)])
-
-        # logits_predict head
-        self.idx_pred_layer = nn.Sequential(
-            nn.LayerNorm(dim_embd),
-            nn.Linear(dim_embd, codebook_size, bias=False))
-        
-        self.channels = {
-            '16': 512,
-            '32': 256,
-            '64': 256,
-            '128': 128,
-            '256': 128,
-            '512': 64,
-        }
-
-        # after second residual block for > 16, before attn layer for ==16
-        self.fuse_encoder_block = {'512':2, '256':5, '128':8, '64':11, '32':14, '16':18}
-        # after first residual block for > 16, before attn layer for ==16
-        self.fuse_generator_block = {'16':6, '32': 9, '64':12, '128':15, '256':18, '512':21}
-
-        # fuse_convs_dict
-        self.fuse_convs_dict = nn.ModuleDict()
-        for f_size in self.connect_list:
-            in_ch = self.channels[f_size]
-            self.fuse_convs_dict[f_size] = Fuse_sft_block(in_ch, in_ch)
-
-    def _init_weights(self, module):
-        if isinstance(module, (nn.Linear, nn.Embedding)):
-            module.weight.data.normal_(mean=0.0, std=0.02)
-            if isinstance(module, nn.Linear) and module.bias is not None:
-                module.bias.data.zero_()
-        elif isinstance(module, nn.LayerNorm):
-            module.bias.data.zero_()
-            module.weight.data.fill_(1.0)
-
-    def forward(self, x, w=0, detach_16=True, code_only=False, adain=False):
-        # ################### Encoder #####################
-        enc_feat_dict = {}
-        out_list = [self.fuse_encoder_block[f_size] for f_size in self.connect_list]
-        for i, block in enumerate(self.encoder.blocks):
-            x = block(x) 
-            if i in out_list:
-                enc_feat_dict[str(x.shape[-1])] = x.clone()
-
-        lq_feat = x
-        # ################# Transformer ###################
-        # quant_feat, codebook_loss, quant_stats = self.quantize(lq_feat)
-        pos_emb = self.position_emb.unsqueeze(1).repeat(1,x.shape[0],1)
-        # BCHW -> BC(HW) -> (HW)BC
-        feat_emb = self.feat_emb(lq_feat.flatten(2).permute(2,0,1))
-        query_emb = feat_emb
-        # Transformer encoder
-        for layer in self.ft_layers:
-            query_emb = layer(query_emb, query_pos=pos_emb)
-
-        # output logits
-        logits = self.idx_pred_layer(query_emb) # (hw)bn
-        logits = logits.permute(1,0,2) # (hw)bn -> b(hw)n
-
-        if code_only: # for training stage II
-          # logits doesn't need softmax before cross_entropy loss
-            return logits, lq_feat
-
-        # ################# Quantization ###################
-        # if self.training:
-        #     quant_feat = torch.einsum('btn,nc->btc', [soft_one_hot, self.quantize.embedding.weight])
-        #     # b(hw)c -> bc(hw) -> bchw
-        #     quant_feat = quant_feat.permute(0,2,1).view(lq_feat.shape)
-        # ------------
-        soft_one_hot = F.softmax(logits, dim=2)
-        _, top_idx = torch.topk(soft_one_hot, 1, dim=2)
-        quant_feat = self.quantize.get_codebook_feat(top_idx, shape=[x.shape[0],16,16,256])
-        # preserve gradients
-        # quant_feat = lq_feat + (quant_feat - lq_feat).detach()
-
-        if detach_16:
-            quant_feat = quant_feat.detach() # for training stage III
-        if adain:
-            quant_feat = adaptive_instance_normalization(quant_feat, lq_feat)
-
-        # ################## Generator ####################
-        x = quant_feat
-        fuse_list = [self.fuse_generator_block[f_size] for f_size in self.connect_list]
-
-        for i, block in enumerate(self.generator.blocks):
-            x = block(x) 
-            if i in fuse_list: # fuse after i-th block
-                f_size = str(x.shape[-1])
-                if w>0:
-                    x = self.fuse_convs_dict[f_size](enc_feat_dict[f_size].detach(), x, w)
-        out = x
-        # logits doesn't need softmax before cross_entropy loss
-        return out, logits, lq_feat

CodeFormer/CodeFormer/basicsr/archs/rrdbnet_arch.py

@@ -1,119 +0,0 @@
-import torch
-from torch import nn as nn
-from torch.nn import functional as F
-
-from basicsr.utils.registry import ARCH_REGISTRY
-from .arch_util import default_init_weights, make_layer, pixel_unshuffle
-
-
-class ResidualDenseBlock(nn.Module):
-    """Residual Dense Block.
-
-    Used in RRDB block in ESRGAN.
-
-    Args:
-        num_feat (int): Channel number of intermediate features.
-        num_grow_ch (int): Channels for each growth.
-    """
-
-    def __init__(self, num_feat=64, num_grow_ch=32):
-        super(ResidualDenseBlock, self).__init__()
-        self.conv1 = nn.Conv2d(num_feat, num_grow_ch, 3, 1, 1)
-        self.conv2 = nn.Conv2d(num_feat + num_grow_ch, num_grow_ch, 3, 1, 1)
-        self.conv3 = nn.Conv2d(num_feat + 2 * num_grow_ch, num_grow_ch, 3, 1, 1)
-        self.conv4 = nn.Conv2d(num_feat + 3 * num_grow_ch, num_grow_ch, 3, 1, 1)
-        self.conv5 = nn.Conv2d(num_feat + 4 * num_grow_ch, num_feat, 3, 1, 1)
-
-        self.lrelu = nn.LeakyReLU(negative_slope=0.2, inplace=True)
-
-        # initialization
-        default_init_weights([self.conv1, self.conv2, self.conv3, self.conv4, self.conv5], 0.1)
-
-    def forward(self, x):
-        x1 = self.lrelu(self.conv1(x))
-        x2 = self.lrelu(self.conv2(torch.cat((x, x1), 1)))
-        x3 = self.lrelu(self.conv3(torch.cat((x, x1, x2), 1)))
-        x4 = self.lrelu(self.conv4(torch.cat((x, x1, x2, x3), 1)))
-        x5 = self.conv5(torch.cat((x, x1, x2, x3, x4), 1))
-        # Emperically, we use 0.2 to scale the residual for better performance
-        return x5 * 0.2 + x
-
-
-class RRDB(nn.Module):
-    """Residual in Residual Dense Block.
-
-    Used in RRDB-Net in ESRGAN.
-
-    Args:
-        num_feat (int): Channel number of intermediate features.
-        num_grow_ch (int): Channels for each growth.
-    """
-
-    def __init__(self, num_feat, num_grow_ch=32):
-        super(RRDB, self).__init__()
-        self.rdb1 = ResidualDenseBlock(num_feat, num_grow_ch)
-        self.rdb2 = ResidualDenseBlock(num_feat, num_grow_ch)
-        self.rdb3 = ResidualDenseBlock(num_feat, num_grow_ch)
-
-    def forward(self, x):
-        out = self.rdb1(x)
-        out = self.rdb2(out)
-        out = self.rdb3(out)
-        # Emperically, we use 0.2 to scale the residual for better performance
-        return out * 0.2 + x
-
-
-@ARCH_REGISTRY.register()
-class RRDBNet(nn.Module):
-    """Networks consisting of Residual in Residual Dense Block, which is used
-    in ESRGAN.
-
-    ESRGAN: Enhanced Super-Resolution Generative Adversarial Networks.
-
-    We extend ESRGAN for scale x2 and scale x1.
-    Note: This is one option for scale 1, scale 2 in RRDBNet.
-    We first employ the pixel-unshuffle (an inverse operation of pixelshuffle to reduce the spatial size
-    and enlarge the channel size before feeding inputs into the main ESRGAN architecture.
-
-    Args:
-        num_in_ch (int): Channel number of inputs.
-        num_out_ch (int): Channel number of outputs.
-        num_feat (int): Channel number of intermediate features.
-            Default: 64
-        num_block (int): Block number in the trunk network. Defaults: 23
-        num_grow_ch (int): Channels for each growth. Default: 32.
-    """
-
-    def __init__(self, num_in_ch, num_out_ch, scale=4, num_feat=64, num_block=23, num_grow_ch=32):
-        super(RRDBNet, self).__init__()
-        self.scale = scale
-        if scale == 2:
-            num_in_ch = num_in_ch * 4
-        elif scale == 1:
-            num_in_ch = num_in_ch * 16
-        self.conv_first = nn.Conv2d(num_in_ch, num_feat, 3, 1, 1)
-        self.body = make_layer(RRDB, num_block, num_feat=num_feat, num_grow_ch=num_grow_ch)
-        self.conv_body = nn.Conv2d(num_feat, num_feat, 3, 1, 1)
-        # upsample
-        self.conv_up1 = nn.Conv2d(num_feat, num_feat, 3, 1, 1)
-        self.conv_up2 = nn.Conv2d(num_feat, num_feat, 3, 1, 1)
-        self.conv_hr = nn.Conv2d(num_feat, num_feat, 3, 1, 1)
-        self.conv_last = nn.Conv2d(num_feat, num_out_ch, 3, 1, 1)
-
-        self.lrelu = nn.LeakyReLU(negative_slope=0.2, inplace=True)
-
-    def forward(self, x):
-        if self.scale == 2:
-            feat = pixel_unshuffle(x, scale=2)
-        elif self.scale == 1:
-            feat = pixel_unshuffle(x, scale=4)
-        else:
-            feat = x
-        feat = self.conv_first(feat)
-        body_feat = self.conv_body(self.body(feat))
-        feat = feat + body_feat
-        # upsample
-        feat = self.lrelu(self.conv_up1(F.interpolate(feat, scale_factor=2, mode='nearest')))
-        feat = self.lrelu(self.conv_up2(F.interpolate(feat, scale_factor=2, mode='nearest')))
-        out = self.conv_last(self.lrelu(self.conv_hr(feat)))
-        return out

CodeFormer/CodeFormer/basicsr/archs/vgg_arch.py

@@ -1,161 +0,0 @@
-import os
-import torch
-from collections import OrderedDict
-from torch import nn as nn
-from torchvision.models import vgg as vgg
-
-from basicsr.utils.registry import ARCH_REGISTRY
-
-VGG_PRETRAIN_PATH = 'experiments/pretrained_models/vgg19-dcbb9e9d.pth'
-NAMES = {
-    'vgg11': [
-        'conv1_1', 'relu1_1', 'pool1', 'conv2_1', 'relu2_1', 'pool2', 'conv3_1', 'relu3_1', 'conv3_2', 'relu3_2',
-        'pool3', 'conv4_1', 'relu4_1', 'conv4_2', 'relu4_2', 'pool4', 'conv5_1', 'relu5_1', 'conv5_2', 'relu5_2',
-        'pool5'
-    ],
-    'vgg13': [
-        'conv1_1', 'relu1_1', 'conv1_2', 'relu1_2', 'pool1', 'conv2_1', 'relu2_1', 'conv2_2', 'relu2_2', 'pool2',
-        'conv3_1', 'relu3_1', 'conv3_2', 'relu3_2', 'pool3', 'conv4_1', 'relu4_1', 'conv4_2', 'relu4_2', 'pool4',
-        'conv5_1', 'relu5_1', 'conv5_2', 'relu5_2', 'pool5'
-    ],
-    'vgg16': [
-        'conv1_1', 'relu1_1', 'conv1_2', 'relu1_2', 'pool1', 'conv2_1', 'relu2_1', 'conv2_2', 'relu2_2', 'pool2',
-        'conv3_1', 'relu3_1', 'conv3_2', 'relu3_2', 'conv3_3', 'relu3_3', 'pool3', 'conv4_1', 'relu4_1', 'conv4_2',
-        'relu4_2', 'conv4_3', 'relu4_3', 'pool4', 'conv5_1', 'relu5_1', 'conv5_2', 'relu5_2', 'conv5_3', 'relu5_3',
-        'pool5'
-    ],
-    'vgg19': [
-        'conv1_1', 'relu1_1', 'conv1_2', 'relu1_2', 'pool1', 'conv2_1', 'relu2_1', 'conv2_2', 'relu2_2', 'pool2',
-        'conv3_1', 'relu3_1', 'conv3_2', 'relu3_2', 'conv3_3', 'relu3_3', 'conv3_4', 'relu3_4', 'pool3', 'conv4_1',
-        'relu4_1', 'conv4_2', 'relu4_2', 'conv4_3', 'relu4_3', 'conv4_4', 'relu4_4', 'pool4', 'conv5_1', 'relu5_1',
-        'conv5_2', 'relu5_2', 'conv5_3', 'relu5_3', 'conv5_4', 'relu5_4', 'pool5'
-    ]
-}
-
-
-def insert_bn(names):
-    """Insert bn layer after each conv.
-
-    Args:
-        names (list): The list of layer names.
-
-    Returns:
-        list: The list of layer names with bn layers.
-    """
-    names_bn = []
-    for name in names:
-        names_bn.append(name)
-        if 'conv' in name:
-            position = name.replace('conv', '')
-            names_bn.append('bn' + position)
-    return names_bn
-
-
-@ARCH_REGISTRY.register()
-class VGGFeatureExtractor(nn.Module):
-    """VGG network for feature extraction.
-
-    In this implementation, we allow users to choose whether use normalization
-    in the input feature and the type of vgg network. Note that the pretrained
-    path must fit the vgg type.
-
-    Args:
-        layer_name_list (list[str]): Forward function returns the corresponding
-            features according to the layer_name_list.
-            Example: {'relu1_1', 'relu2_1', 'relu3_1'}.
-        vgg_type (str): Set the type of vgg network. Default: 'vgg19'.
-        use_input_norm (bool): If True, normalize the input image. Importantly,
-            the input feature must in the range [0, 1]. Default: True.
-        range_norm (bool): If True, norm images with range [-1, 1] to [0, 1].
-            Default: False.
-        requires_grad (bool): If true, the parameters of VGG network will be
-            optimized. Default: False.
-        remove_pooling (bool): If true, the max pooling operations in VGG net
-            will be removed. Default: False.
-        pooling_stride (int): The stride of max pooling operation. Default: 2.
-    """
-
-    def __init__(self,
-                 layer_name_list,
-                 vgg_type='vgg19',
-                 use_input_norm=True,
-                 range_norm=False,
-                 requires_grad=False,
-                 remove_pooling=False,
-                 pooling_stride=2):
-        super(VGGFeatureExtractor, self).__init__()
-
-        self.layer_name_list = layer_name_list
-        self.use_input_norm = use_input_norm
-        self.range_norm = range_norm
-
-        self.names = NAMES[vgg_type.replace('_bn', '')]
-        if 'bn' in vgg_type:
-            self.names = insert_bn(self.names)
-
-        # only borrow layers that will be used to avoid unused params
-        max_idx = 0
-        for v in layer_name_list:
-            idx = self.names.index(v)
-            if idx > max_idx:
-                max_idx = idx
-
-        if os.path.exists(VGG_PRETRAIN_PATH):
-            vgg_net = getattr(vgg, vgg_type)(pretrained=False)
-            state_dict = torch.load(VGG_PRETRAIN_PATH, map_location=lambda storage, loc: storage)
-            vgg_net.load_state_dict(state_dict)
-        else:
-            vgg_net = getattr(vgg, vgg_type)(pretrained=True)
-
-        features = vgg_net.features[:max_idx + 1]
-
-        modified_net = OrderedDict()
-        for k, v in zip(self.names, features):
-            if 'pool' in k:
-                # if remove_pooling is true, pooling operation will be removed
-                if remove_pooling:
-                    continue
-                else:
-                    # in some cases, we may want to change the default stride
-                    modified_net[k] = nn.MaxPool2d(kernel_size=2, stride=pooling_stride)
-            else:
-                modified_net[k] = v
-
-        self.vgg_net = nn.Sequential(modified_net)
-
-        if not requires_grad:
-            self.vgg_net.eval()
-            for param in self.parameters():
-                param.requires_grad = False
-        else:
-            self.vgg_net.train()
-            for param in self.parameters():
-                param.requires_grad = True
-
-        if self.use_input_norm:
-            # the mean is for image with range [0, 1]
-            self.register_buffer('mean', torch.Tensor([0.485, 0.456, 0.406]).view(1, 3, 1, 1))
-            # the std is for image with range [0, 1]
-            self.register_buffer('std', torch.Tensor([0.229, 0.224, 0.225]).view(1, 3, 1, 1))
-
-    def forward(self, x):
-        """Forward function.
-
-        Args:
-            x (Tensor): Input tensor with shape (n, c, h, w).
-
-        Returns:
-            Tensor: Forward results.
-        """
-        if self.range_norm:
-            x = (x + 1) / 2
-        if self.use_input_norm:
-            x = (x - self.mean) / self.std
-        output = {}
-
-        for key, layer in self.vgg_net._modules.items():
-            x = layer(x)
-            if key in self.layer_name_list:
-                output[key] = x.clone()
-
-        return output

CodeFormer/CodeFormer/basicsr/archs/vqgan_arch.py

@@ -1,435 +0,0 @@
-'''
-VQGAN code, adapted from the original created by the Unleashing Transformers authors:
-https://github.com/samb-t/unleashing-transformers/blob/master/models/vqgan.py
-
-'''
-import numpy as np
-import torch
-import torch.nn as nn
-import torch.nn.functional as F
-import copy
-from basicsr.utils import get_root_logger
-from basicsr.utils.registry import ARCH_REGISTRY
-
-def normalize(in_channels):
-    return torch.nn.GroupNorm(num_groups=32, num_channels=in_channels, eps=1e-6, affine=True)
-    
-
-@torch.jit.script
-def swish(x):
-    return x*torch.sigmoid(x)
-
-
-#  Define VQVAE classes
-class VectorQuantizer(nn.Module):
-    def __init__(self, codebook_size, emb_dim, beta):
-        super(VectorQuantizer, self).__init__()
-        self.codebook_size = codebook_size  # number of embeddings
-        self.emb_dim = emb_dim  # dimension of embedding
-        self.beta = beta  # commitment cost used in loss term, beta * ||z_e(x)-sg[e]||^2
-        self.embedding = nn.Embedding(self.codebook_size, self.emb_dim)
-        self.embedding.weight.data.uniform_(-1.0 / self.codebook_size, 1.0 / self.codebook_size)
-
-    def forward(self, z):
-        # reshape z -> (batch, height, width, channel) and flatten
-        z = z.permute(0, 2, 3, 1).contiguous()
-        z_flattened = z.view(-1, self.emb_dim)
-
-        # distances from z to embeddings e_j (z - e)^2 = z^2 + e^2 - 2 e * z
-        d = (z_flattened ** 2).sum(dim=1, keepdim=True) + (self.embedding.weight**2).sum(1) - \
-            2 * torch.matmul(z_flattened, self.embedding.weight.t())
-
-        mean_distance = torch.mean(d)
-        # find closest encodings
-        # min_encoding_indices = torch.argmin(d, dim=1).unsqueeze(1)
-        min_encoding_scores, min_encoding_indices = torch.topk(d, 1, dim=1, largest=False)
-        # [0-1], higher score, higher confidence
-        min_encoding_scores = torch.exp(-min_encoding_scores/10)
-
-        min_encodings = torch.zeros(min_encoding_indices.shape[0], self.codebook_size).to(z)
-        min_encodings.scatter_(1, min_encoding_indices, 1)
-
-        # get quantized latent vectors
-        z_q = torch.matmul(min_encodings, self.embedding.weight).view(z.shape)
-        # compute loss for embedding
-        loss = torch.mean((z_q.detach()-z)**2) + self.beta * torch.mean((z_q - z.detach()) ** 2)
-        # preserve gradients
-        z_q = z + (z_q - z).detach()
-
-        # perplexity
-        e_mean = torch.mean(min_encodings, dim=0)
-        perplexity = torch.exp(-torch.sum(e_mean * torch.log(e_mean + 1e-10)))
-        # reshape back to match original input shape
-        z_q = z_q.permute(0, 3, 1, 2).contiguous()
-
-        return z_q, loss, {
-            "perplexity": perplexity,
-            "min_encodings": min_encodings,
-            "min_encoding_indices": min_encoding_indices,
-            "min_encoding_scores": min_encoding_scores,
-            "mean_distance": mean_distance
-            }
-
-    def get_codebook_feat(self, indices, shape):
-        # input indices: batch*token_num -> (batch*token_num)*1
-        # shape: batch, height, width, channel
-        indices = indices.view(-1,1)
-        min_encodings = torch.zeros(indices.shape[0], self.codebook_size).to(indices)
-        min_encodings.scatter_(1, indices, 1)
-        # get quantized latent vectors
-        z_q = torch.matmul(min_encodings.float(), self.embedding.weight)
-
-        if shape is not None:  # reshape back to match original input shape
-            z_q = z_q.view(shape).permute(0, 3, 1, 2).contiguous()
-
-        return z_q
-
-
-class GumbelQuantizer(nn.Module):
-    def __init__(self, codebook_size, emb_dim, num_hiddens, straight_through=False, kl_weight=5e-4, temp_init=1.0):
-        super().__init__()
-        self.codebook_size = codebook_size  # number of embeddings
-        self.emb_dim = emb_dim  # dimension of embedding
-        self.straight_through = straight_through
-        self.temperature = temp_init
-        self.kl_weight = kl_weight
-        self.proj = nn.Conv2d(num_hiddens, codebook_size, 1)  # projects last encoder layer to quantized logits
-        self.embed = nn.Embedding(codebook_size, emb_dim)
-
-    def forward(self, z):
-        hard = self.straight_through if self.training else True
-
-        logits = self.proj(z)
-
-        soft_one_hot = F.gumbel_softmax(logits, tau=self.temperature, dim=1, hard=hard)
-
-        z_q = torch.einsum("b n h w, n d -> b d h w", soft_one_hot, self.embed.weight)
-
-        # + kl divergence to the prior loss
-        qy = F.softmax(logits, dim=1)
-        diff = self.kl_weight * torch.sum(qy * torch.log(qy * self.codebook_size + 1e-10), dim=1).mean()
-        min_encoding_indices = soft_one_hot.argmax(dim=1)
-
-        return z_q, diff, {
-            "min_encoding_indices": min_encoding_indices
-        }
-
-
-class Downsample(nn.Module):
-    def __init__(self, in_channels):
-        super().__init__()
-        self.conv = torch.nn.Conv2d(in_channels, in_channels, kernel_size=3, stride=2, padding=0)
-
-    def forward(self, x):
-        pad = (0, 1, 0, 1)
-        x = torch.nn.functional.pad(x, pad, mode="constant", value=0)
-        x = self.conv(x)
-        return x
-
-
-class Upsample(nn.Module):
-    def __init__(self, in_channels):
-        super().__init__()
-        self.conv = nn.Conv2d(in_channels, in_channels, kernel_size=3, stride=1, padding=1)
-
-    def forward(self, x):
-        x = F.interpolate(x, scale_factor=2.0, mode="nearest")
-        x = self.conv(x)
-
-        return x
-
-
-class ResBlock(nn.Module):
-    def __init__(self, in_channels, out_channels=None):
-        super(ResBlock, self).__init__()
-        self.in_channels = in_channels
-        self.out_channels = in_channels if out_channels is None else out_channels
-        self.norm1 = normalize(in_channels)
-        self.conv1 = nn.Conv2d(in_channels, out_channels, kernel_size=3, stride=1, padding=1)
-        self.norm2 = normalize(out_channels)
-        self.conv2 = nn.Conv2d(out_channels, out_channels, kernel_size=3, stride=1, padding=1)
-        if self.in_channels != self.out_channels:
-            self.conv_out = nn.Conv2d(in_channels, out_channels, kernel_size=1, stride=1, padding=0)
-
-    def forward(self, x_in):
-        x = x_in
-        x = self.norm1(x)
-        x = swish(x)
-        x = self.conv1(x)
-        x = self.norm2(x)
-        x = swish(x)
-        x = self.conv2(x)
-        if self.in_channels != self.out_channels:
-            x_in = self.conv_out(x_in)
-
-        return x + x_in
-
-
-class AttnBlock(nn.Module):
-    def __init__(self, in_channels):
-        super().__init__()
-        self.in_channels = in_channels
-
-        self.norm = normalize(in_channels)
-        self.q = torch.nn.Conv2d(
-            in_channels,
-            in_channels,
-            kernel_size=1,
-            stride=1,
-            padding=0
-        )
-        self.k = torch.nn.Conv2d(
-            in_channels,
-            in_channels,
-            kernel_size=1,
-            stride=1,
-            padding=0
-        )
-        self.v = torch.nn.Conv2d(
-            in_channels,
-            in_channels,
-            kernel_size=1,
-            stride=1,
-            padding=0
-        )
-        self.proj_out = torch.nn.Conv2d(
-            in_channels,
-            in_channels,
-            kernel_size=1,
-            stride=1,
-            padding=0
-        )
-
-    def forward(self, x):
-        h_ = x
-        h_ = self.norm(h_)
-        q = self.q(h_)
-        k = self.k(h_)
-        v = self.v(h_)
-
-        # compute attention
-        b, c, h, w = q.shape
-        q = q.reshape(b, c, h*w)
-        q = q.permute(0, 2, 1)   
-        k = k.reshape(b, c, h*w)
-        w_ = torch.bmm(q, k) 
-        w_ = w_ * (int(c)**(-0.5))
-        w_ = F.softmax(w_, dim=2)
-
-        # attend to values
-        v = v.reshape(b, c, h*w)
-        w_ = w_.permute(0, 2, 1) 
-        h_ = torch.bmm(v, w_)
-        h_ = h_.reshape(b, c, h, w)
-
-        h_ = self.proj_out(h_)
-
-        return x+h_
-
-
-class Encoder(nn.Module):
-    def __init__(self, in_channels, nf, emb_dim, ch_mult, num_res_blocks, resolution, attn_resolutions):
-        super().__init__()
-        self.nf = nf
-        self.num_resolutions = len(ch_mult)
-        self.num_res_blocks = num_res_blocks
-        self.resolution = resolution
-        self.attn_resolutions = attn_resolutions
-
-        curr_res = self.resolution
-        in_ch_mult = (1,)+tuple(ch_mult)
-
-        blocks = []
-        # initial convultion
-        blocks.append(nn.Conv2d(in_channels, nf, kernel_size=3, stride=1, padding=1))
-
-        # residual and downsampling blocks, with attention on smaller res (16x16)
-        for i in range(self.num_resolutions):
-            block_in_ch = nf * in_ch_mult[i]
-            block_out_ch = nf * ch_mult[i]
-            for _ in range(self.num_res_blocks):
-                blocks.append(ResBlock(block_in_ch, block_out_ch))
-                block_in_ch = block_out_ch
-                if curr_res in attn_resolutions:
-                    blocks.append(AttnBlock(block_in_ch))
-
-            if i != self.num_resolutions - 1:
-                blocks.append(Downsample(block_in_ch))
-                curr_res = curr_res // 2
-
-        # non-local attention block
-        blocks.append(ResBlock(block_in_ch, block_in_ch))
-        blocks.append(AttnBlock(block_in_ch))
-        blocks.append(ResBlock(block_in_ch, block_in_ch))
-
-        # normalise and convert to latent size
-        blocks.append(normalize(block_in_ch))
-        blocks.append(nn.Conv2d(block_in_ch, emb_dim, kernel_size=3, stride=1, padding=1))
-        self.blocks = nn.ModuleList(blocks)
-
-    def forward(self, x):
-        for block in self.blocks:
-            x = block(x)
-            
-        return x
-
-
-class Generator(nn.Module):
-    def __init__(self, nf, emb_dim, ch_mult, res_blocks, img_size, attn_resolutions):
-        super().__init__()
-        self.nf = nf 
-        self.ch_mult = ch_mult 
-        self.num_resolutions = len(self.ch_mult)
-        self.num_res_blocks = res_blocks
-        self.resolution = img_size 
-        self.attn_resolutions = attn_resolutions
-        self.in_channels = emb_dim
-        self.out_channels = 3
-        block_in_ch = self.nf * self.ch_mult[-1]
-        curr_res = self.resolution // 2 ** (self.num_resolutions-1)
-
-        blocks = []
-        # initial conv
-        blocks.append(nn.Conv2d(self.in_channels, block_in_ch, kernel_size=3, stride=1, padding=1))
-
-        # non-local attention block
-        blocks.append(ResBlock(block_in_ch, block_in_ch))
-        blocks.append(AttnBlock(block_in_ch))
-        blocks.append(ResBlock(block_in_ch, block_in_ch))
-
-        for i in reversed(range(self.num_resolutions)):
-            block_out_ch = self.nf * self.ch_mult[i]
-
-            for _ in range(self.num_res_blocks):
-                blocks.append(ResBlock(block_in_ch, block_out_ch))
-                block_in_ch = block_out_ch
-
-                if curr_res in self.attn_resolutions:
-                    blocks.append(AttnBlock(block_in_ch))
-
-            if i != 0:
-                blocks.append(Upsample(block_in_ch))
-                curr_res = curr_res * 2
-
-        blocks.append(normalize(block_in_ch))
-        blocks.append(nn.Conv2d(block_in_ch, self.out_channels, kernel_size=3, stride=1, padding=1))
-
-        self.blocks = nn.ModuleList(blocks)
-   
-
-    def forward(self, x):
-        for block in self.blocks:
-            x = block(x)
-            
-        return x
-
-  
-@ARCH_REGISTRY.register()
-class VQAutoEncoder(nn.Module):
-    def __init__(self, img_size, nf, ch_mult, quantizer="nearest", res_blocks=2, attn_resolutions=[16], codebook_size=1024, emb_dim=256,
-                beta=0.25, gumbel_straight_through=False, gumbel_kl_weight=1e-8, model_path=None):
-        super().__init__()
-        logger = get_root_logger()
-        self.in_channels = 3 
-        self.nf = nf 
-        self.n_blocks = res_blocks 
-        self.codebook_size = codebook_size
-        self.embed_dim = emb_dim
-        self.ch_mult = ch_mult
-        self.resolution = img_size
-        self.attn_resolutions = attn_resolutions
-        self.quantizer_type = quantizer
-        self.encoder = Encoder(
-            self.in_channels,
-            self.nf,
-            self.embed_dim,
-            self.ch_mult,
-            self.n_blocks,
-            self.resolution,
-            self.attn_resolutions
-        )
-        if self.quantizer_type == "nearest":
-            self.beta = beta #0.25
-            self.quantize = VectorQuantizer(self.codebook_size, self.embed_dim, self.beta)
-        elif self.quantizer_type == "gumbel":
-            self.gumbel_num_hiddens = emb_dim
-            self.straight_through = gumbel_straight_through
-            self.kl_weight = gumbel_kl_weight
-            self.quantize = GumbelQuantizer(
-                self.codebook_size,
-                self.embed_dim,
-                self.gumbel_num_hiddens,
-                self.straight_through,
-                self.kl_weight
-            )
-        self.generator = Generator(
-            self.nf, 
-            self.embed_dim,
-            self.ch_mult, 
-            self.n_blocks, 
-            self.resolution, 
-            self.attn_resolutions
-        )
-
-        if model_path is not None:
-            chkpt = torch.load(model_path, map_location='cpu')
-            if 'params_ema' in chkpt:
-                self.load_state_dict(torch.load(model_path, map_location='cpu')['params_ema'])
-                logger.info(f'vqgan is loaded from: {model_path} [params_ema]')
-            elif 'params' in chkpt:
-                self.load_state_dict(torch.load(model_path, map_location='cpu')['params'])
-                logger.info(f'vqgan is loaded from: {model_path} [params]')
-            else:
-                raise ValueError(f'Wrong params!')
-
-
-    def forward(self, x):
-        x = self.encoder(x)
-        quant, codebook_loss, quant_stats = self.quantize(x)
-        x = self.generator(quant)
-        return x, codebook_loss, quant_stats
-
-
-
-# patch based discriminator
-@ARCH_REGISTRY.register()
-class VQGANDiscriminator(nn.Module):
-    def __init__(self, nc=3, ndf=64, n_layers=4, model_path=None):
-        super().__init__()
-
-        layers = [nn.Conv2d(nc, ndf, kernel_size=4, stride=2, padding=1), nn.LeakyReLU(0.2, True)]
-        ndf_mult = 1
-        ndf_mult_prev = 1
-        for n in range(1, n_layers):  # gradually increase the number of filters
-            ndf_mult_prev = ndf_mult
-            ndf_mult = min(2 ** n, 8)
-            layers += [
-                nn.Conv2d(ndf * ndf_mult_prev, ndf * ndf_mult, kernel_size=4, stride=2, padding=1, bias=False),
-                nn.BatchNorm2d(ndf * ndf_mult),
-                nn.LeakyReLU(0.2, True)
-            ]
-
-        ndf_mult_prev = ndf_mult
-        ndf_mult = min(2 ** n_layers, 8)
-
-        layers += [
-            nn.Conv2d(ndf * ndf_mult_prev, ndf * ndf_mult, kernel_size=4, stride=1, padding=1, bias=False),
-            nn.BatchNorm2d(ndf * ndf_mult),
-            nn.LeakyReLU(0.2, True)
-        ]
-
-        layers += [
-            nn.Conv2d(ndf * ndf_mult, 1, kernel_size=4, stride=1, padding=1)]  # output 1 channel prediction map
-        self.main = nn.Sequential(*layers)
-
-        if model_path is not None:
-            chkpt = torch.load(model_path, map_location='cpu')
-            if 'params_d' in chkpt:
-                self.load_state_dict(torch.load(model_path, map_location='cpu')['params_d'])
-            elif 'params' in chkpt:
-                self.load_state_dict(torch.load(model_path, map_location='cpu')['params'])
-            else:
-                raise ValueError(f'Wrong params!')
-
-    def forward(self, x):
-        return self.main(x)

CodeFormer/CodeFormer/basicsr/data/__init__.py

@@ -1,100 +0,0 @@
-import importlib
-import numpy as np
-import random
-import torch
-import torch.utils.data
-from copy import deepcopy
-from functools import partial
-from os import path as osp
-
-from basicsr.data.prefetch_dataloader import PrefetchDataLoader
-from basicsr.utils import get_root_logger, scandir
-from basicsr.utils.dist_util import get_dist_info
-from basicsr.utils.registry import DATASET_REGISTRY
-
-__all__ = ['build_dataset', 'build_dataloader']
-
-# automatically scan and import dataset modules for registry
-# scan all the files under the data folder with '_dataset' in file names
-data_folder = osp.dirname(osp.abspath(__file__))
-dataset_filenames = [osp.splitext(osp.basename(v))[0] for v in scandir(data_folder) if v.endswith('_dataset.py')]
-# import all the dataset modules
-_dataset_modules = [importlib.import_module(f'basicsr.data.{file_name}') for file_name in dataset_filenames]
-
-
-def build_dataset(dataset_opt):
-    """Build dataset from options.
-
-    Args:
-        dataset_opt (dict): Configuration for dataset. It must constain:
-            name (str): Dataset name.
-            type (str): Dataset type.
-    """
-    dataset_opt = deepcopy(dataset_opt)
-    dataset = DATASET_REGISTRY.get(dataset_opt['type'])(dataset_opt)
-    logger = get_root_logger()
-    logger.info(f'Dataset [{dataset.__class__.__name__}] - {dataset_opt["name"]} ' 'is built.')
-    return dataset
-
-
-def build_dataloader(dataset, dataset_opt, num_gpu=1, dist=False, sampler=None, seed=None):
-    """Build dataloader.
-
-    Args:
-        dataset (torch.utils.data.Dataset): Dataset.
-        dataset_opt (dict): Dataset options. It contains the following keys:
-            phase (str): 'train' or 'val'.
-            num_worker_per_gpu (int): Number of workers for each GPU.
-            batch_size_per_gpu (int): Training batch size for each GPU.
-        num_gpu (int): Number of GPUs. Used only in the train phase.
-            Default: 1.
-        dist (bool): Whether in distributed training. Used only in the train
-            phase. Default: False.
-        sampler (torch.utils.data.sampler): Data sampler. Default: None.
-        seed (int | None): Seed. Default: None
-    """
-    phase = dataset_opt['phase']
-    rank, _ = get_dist_info()
-    if phase == 'train':
-        if dist:  # distributed training
-            batch_size = dataset_opt['batch_size_per_gpu']
-            num_workers = dataset_opt['num_worker_per_gpu']
-        else:  # non-distributed training
-            multiplier = 1 if num_gpu == 0 else num_gpu
-            batch_size = dataset_opt['batch_size_per_gpu'] * multiplier
-            num_workers = dataset_opt['num_worker_per_gpu'] * multiplier
-        dataloader_args = dict(
-            dataset=dataset,
-            batch_size=batch_size,
-            shuffle=False,
-            num_workers=num_workers,
-            sampler=sampler,
-            drop_last=True)
-        if sampler is None:
-            dataloader_args['shuffle'] = True
-        dataloader_args['worker_init_fn'] = partial(
-            worker_init_fn, num_workers=num_workers, rank=rank, seed=seed) if seed is not None else None
-    elif phase in ['val', 'test']:  # validation
-        dataloader_args = dict(dataset=dataset, batch_size=1, shuffle=False, num_workers=0)
-    else:
-        raise ValueError(f'Wrong dataset phase: {phase}. ' "Supported ones are 'train', 'val' and 'test'.")
-
-    dataloader_args['pin_memory'] = dataset_opt.get('pin_memory', False)
-
-    prefetch_mode = dataset_opt.get('prefetch_mode')
-    if prefetch_mode == 'cpu':  # CPUPrefetcher
-        num_prefetch_queue = dataset_opt.get('num_prefetch_queue', 1)
-        logger = get_root_logger()
-        logger.info(f'Use {prefetch_mode} prefetch dataloader: ' f'num_prefetch_queue = {num_prefetch_queue}')
-        return PrefetchDataLoader(num_prefetch_queue=num_prefetch_queue, **dataloader_args)
-    else:
-        # prefetch_mode=None: Normal dataloader
-        # prefetch_mode='cuda': dataloader for CUDAPrefetcher
-        return torch.utils.data.DataLoader(**dataloader_args)
-
-
-def worker_init_fn(worker_id, num_workers, rank, seed):
-    # Set the worker seed to num_workers * rank + worker_id + seed
-    worker_seed = num_workers * rank + worker_id + seed
-    np.random.seed(worker_seed)
-    random.seed(worker_seed)

CodeFormer/CodeFormer/basicsr/data/data_sampler.py

@@ -1,48 +0,0 @@
-import math
-import torch
-from torch.utils.data.sampler import Sampler
-
-
-class EnlargedSampler(Sampler):
-    """Sampler that restricts data loading to a subset of the dataset.
-
-    Modified from torch.utils.data.distributed.DistributedSampler
-    Support enlarging the dataset for iteration-based training, for saving
-    time when restart the dataloader after each epoch
-
-    Args:
-        dataset (torch.utils.data.Dataset): Dataset used for sampling.
-        num_replicas (int | None): Number of processes participating in
-            the training. It is usually the world_size.
-        rank (int | None): Rank of the current process within num_replicas.
-        ratio (int): Enlarging ratio. Default: 1.
-    """
-
-    def __init__(self, dataset, num_replicas, rank, ratio=1):
-        self.dataset = dataset
-        self.num_replicas = num_replicas
-        self.rank = rank
-        self.epoch = 0
-        self.num_samples = math.ceil(len(self.dataset) * ratio / self.num_replicas)
-        self.total_size = self.num_samples * self.num_replicas
-
-    def __iter__(self):
-        # deterministically shuffle based on epoch
-        g = torch.Generator()
-        g.manual_seed(self.epoch)
-        indices = torch.randperm(self.total_size, generator=g).tolist()
-
-        dataset_size = len(self.dataset)
-        indices = [v % dataset_size for v in indices]
-
-        # subsample
-        indices = indices[self.rank:self.total_size:self.num_replicas]
-        assert len(indices) == self.num_samples
-
-        return iter(indices)
-
-    def __len__(self):
-        return self.num_samples
-
-    def set_epoch(self, epoch):
-        self.epoch = epoch

CodeFormer/CodeFormer/basicsr/data/data_util.py

@@ -1,305 +0,0 @@
-import cv2
-import numpy as np
-import torch
-from os import path as osp
-from torch.nn import functional as F
-
-from basicsr.data.transforms import mod_crop
-from basicsr.utils import img2tensor, scandir
-
-
-def read_img_seq(path, require_mod_crop=False, scale=1):
-    """Read a sequence of images from a given folder path.
-
-    Args:
-        path (list[str] | str): List of image paths or image folder path.
-        require_mod_crop (bool): Require mod crop for each image.
-            Default: False.
-        scale (int): Scale factor for mod_crop. Default: 1.
-
-    Returns:
-        Tensor: size (t, c, h, w), RGB, [0, 1].
-    """
-    if isinstance(path, list):
-        img_paths = path
-    else:
-        img_paths = sorted(list(scandir(path, full_path=True)))
-    imgs = [cv2.imread(v).astype(np.float32) / 255. for v in img_paths]
-    if require_mod_crop:
-        imgs = [mod_crop(img, scale) for img in imgs]
-    imgs = img2tensor(imgs, bgr2rgb=True, float32=True)
-    imgs = torch.stack(imgs, dim=0)
-    return imgs
-
-
-def generate_frame_indices(crt_idx, max_frame_num, num_frames, padding='reflection'):
-    """Generate an index list for reading `num_frames` frames from a sequence
-    of images.
-
-    Args:
-        crt_idx (int): Current center index.
-        max_frame_num (int): Max number of the sequence of images (from 1).
-        num_frames (int): Reading num_frames frames.
-        padding (str): Padding mode, one of
-            'replicate' | 'reflection' | 'reflection_circle' | 'circle'
-            Examples: current_idx = 0, num_frames = 5
-            The generated frame indices under different padding mode:
-            replicate: [0, 0, 0, 1, 2]
-            reflection: [2, 1, 0, 1, 2]
-            reflection_circle: [4, 3, 0, 1, 2]
-            circle: [3, 4, 0, 1, 2]
-
-    Returns:
-        list[int]: A list of indices.
-    """
-    assert num_frames % 2 == 1, 'num_frames should be an odd number.'
-    assert padding in ('replicate', 'reflection', 'reflection_circle', 'circle'), f'Wrong padding mode: {padding}.'
-
-    max_frame_num = max_frame_num - 1  # start from 0
-    num_pad = num_frames // 2
-
-    indices = []
-    for i in range(crt_idx - num_pad, crt_idx + num_pad + 1):
-        if i < 0:
-            if padding == 'replicate':
-                pad_idx = 0
-            elif padding == 'reflection':
-                pad_idx = -i
-            elif padding == 'reflection_circle':
-                pad_idx = crt_idx + num_pad - i
-            else:
-                pad_idx = num_frames + i
-        elif i > max_frame_num:
-            if padding == 'replicate':
-                pad_idx = max_frame_num
-            elif padding == 'reflection':
-                pad_idx = max_frame_num * 2 - i
-            elif padding == 'reflection_circle':
-                pad_idx = (crt_idx - num_pad) - (i - max_frame_num)
-            else:
-                pad_idx = i - num_frames
-        else:
-            pad_idx = i
-        indices.append(pad_idx)
-    return indices
-
-
-def paired_paths_from_lmdb(folders, keys):
-    """Generate paired paths from lmdb files.
-
-    Contents of lmdb. Taking the `lq.lmdb` for example, the file structure is:
-
-    lq.lmdb
-    ├── data.mdb
-    ├── lock.mdb
-    ├── meta_info.txt
-
-    The data.mdb and lock.mdb are standard lmdb files and you can refer to
-    https://lmdb.readthedocs.io/en/release/ for more details.
-
-    The meta_info.txt is a specified txt file to record the meta information
-    of our datasets. It will be automatically created when preparing
-    datasets by our provided dataset tools.
-    Each line in the txt file records
-    1)image name (with extension),
-    2)image shape,
-    3)compression level, separated by a white space.
-    Example: `baboon.png (120,125,3) 1`
-
-    We use the image name without extension as the lmdb key.
-    Note that we use the same key for the corresponding lq and gt images.
-
-    Args:
-        folders (list[str]): A list of folder path. The order of list should
-            be [input_folder, gt_folder].
-        keys (list[str]): A list of keys identifying folders. The order should
-            be in consistent with folders, e.g., ['lq', 'gt'].
-            Note that this key is different from lmdb keys.
-
-    Returns:
-        list[str]: Returned path list.
-    """
-    assert len(folders) == 2, ('The len of folders should be 2 with [input_folder, gt_folder]. '
-                               f'But got {len(folders)}')
-    assert len(keys) == 2, ('The len of keys should be 2 with [input_key, gt_key]. ' f'But got {len(keys)}')
-    input_folder, gt_folder = folders
-    input_key, gt_key = keys
-
-    if not (input_folder.endswith('.lmdb') and gt_folder.endswith('.lmdb')):
-        raise ValueError(f'{input_key} folder and {gt_key} folder should both in lmdb '
-                         f'formats. But received {input_key}: {input_folder}; '
-                         f'{gt_key}: {gt_folder}')
-    # ensure that the two meta_info files are the same
-    with open(osp.join(input_folder, 'meta_info.txt')) as fin:
-        input_lmdb_keys = [line.split('.')[0] for line in fin]
-    with open(osp.join(gt_folder, 'meta_info.txt')) as fin:
-        gt_lmdb_keys = [line.split('.')[0] for line in fin]
-    if set(input_lmdb_keys) != set(gt_lmdb_keys):
-        raise ValueError(f'Keys in {input_key}_folder and {gt_key}_folder are different.')
-    else:
-        paths = []
-        for lmdb_key in sorted(input_lmdb_keys):
-            paths.append(dict([(f'{input_key}_path', lmdb_key), (f'{gt_key}_path', lmdb_key)]))
-        return paths
-
-
-def paired_paths_from_meta_info_file(folders, keys, meta_info_file, filename_tmpl):
-    """Generate paired paths from an meta information file.
-
-    Each line in the meta information file contains the image names and
-    image shape (usually for gt), separated by a white space.
-
-    Example of an meta information file:
-    ```
-    0001_s001.png (480,480,3)
-    0001_s002.png (480,480,3)
-    ```
-
-    Args:
-        folders (list[str]): A list of folder path. The order of list should
-            be [input_folder, gt_folder].
-        keys (list[str]): A list of keys identifying folders. The order should
-            be in consistent with folders, e.g., ['lq', 'gt'].
-        meta_info_file (str): Path to the meta information file.
-        filename_tmpl (str): Template for each filename. Note that the
-            template excludes the file extension. Usually the filename_tmpl is
-            for files in the input folder.
-
-    Returns:
-        list[str]: Returned path list.
-    """
-    assert len(folders) == 2, ('The len of folders should be 2 with [input_folder, gt_folder]. '
-                               f'But got {len(folders)}')
-    assert len(keys) == 2, ('The len of keys should be 2 with [input_key, gt_key]. ' f'But got {len(keys)}')
-    input_folder, gt_folder = folders
-    input_key, gt_key = keys
-
-    with open(meta_info_file, 'r') as fin:
-        gt_names = [line.split(' ')[0] for line in fin]
-
-    paths = []
-    for gt_name in gt_names:
-        basename, ext = osp.splitext(osp.basename(gt_name))
-        input_name = f'{filename_tmpl.format(basename)}{ext}'
-        input_path = osp.join(input_folder, input_name)
-        gt_path = osp.join(gt_folder, gt_name)
-        paths.append(dict([(f'{input_key}_path', input_path), (f'{gt_key}_path', gt_path)]))
-    return paths
-
-
-def paired_paths_from_folder(folders, keys, filename_tmpl):
-    """Generate paired paths from folders.
-
-    Args:
-        folders (list[str]): A list of folder path. The order of list should
-            be [input_folder, gt_folder].
-        keys (list[str]): A list of keys identifying folders. The order should
-            be in consistent with folders, e.g., ['lq', 'gt'].
-        filename_tmpl (str): Template for each filename. Note that the
-            template excludes the file extension. Usually the filename_tmpl is
-            for files in the input folder.
-
-    Returns:
-        list[str]: Returned path list.
-    """
-    assert len(folders) == 2, ('The len of folders should be 2 with [input_folder, gt_folder]. '
-                               f'But got {len(folders)}')
-    assert len(keys) == 2, ('The len of keys should be 2 with [input_key, gt_key]. ' f'But got {len(keys)}')
-    input_folder, gt_folder = folders
-    input_key, gt_key = keys
-
-    input_paths = list(scandir(input_folder))
-    gt_paths = list(scandir(gt_folder))
-    assert len(input_paths) == len(gt_paths), (f'{input_key} and {gt_key} datasets have different number of images: '
-                                               f'{len(input_paths)}, {len(gt_paths)}.')
-    paths = []
-    for gt_path in gt_paths:
-        basename, ext = osp.splitext(osp.basename(gt_path))
-        input_name = f'{filename_tmpl.format(basename)}{ext}'
-        input_path = osp.join(input_folder, input_name)
-        assert input_name in input_paths, (f'{input_name} is not in ' f'{input_key}_paths.')
-        gt_path = osp.join(gt_folder, gt_path)
-        paths.append(dict([(f'{input_key}_path', input_path), (f'{gt_key}_path', gt_path)]))
-    return paths
-
-
-def paths_from_folder(folder):
-    """Generate paths from folder.
-
-    Args:
-        folder (str): Folder path.
-
-    Returns:
-        list[str]: Returned path list.
-    """
-
-    paths = list(scandir(folder))
-    paths = [osp.join(folder, path) for path in paths]
-    return paths
-
-
-def paths_from_lmdb(folder):
-    """Generate paths from lmdb.
-
-    Args:
-        folder (str): Folder path.
-
-    Returns:
-        list[str]: Returned path list.
-    """
-    if not folder.endswith('.lmdb'):
-        raise ValueError(f'Folder {folder}folder should in lmdb format.')
-    with open(osp.join(folder, 'meta_info.txt')) as fin:
-        paths = [line.split('.')[0] for line in fin]
-    return paths
-
-
-def generate_gaussian_kernel(kernel_size=13, sigma=1.6):
-    """Generate Gaussian kernel used in `duf_downsample`.
-
-    Args:
-        kernel_size (int): Kernel size. Default: 13.
-        sigma (float): Sigma of the Gaussian kernel. Default: 1.6.
-
-    Returns:
-        np.array: The Gaussian kernel.
-    """
-    from scipy.ndimage import filters as filters
-    kernel = np.zeros((kernel_size, kernel_size))
-    # set element at the middle to one, a dirac delta
-    kernel[kernel_size // 2, kernel_size // 2] = 1
-    # gaussian-smooth the dirac, resulting in a gaussian filter
-    return filters.gaussian_filter(kernel, sigma)
-
-
-def duf_downsample(x, kernel_size=13, scale=4):
-    """Downsamping with Gaussian kernel used in the DUF official code.
-
-    Args:
-        x (Tensor): Frames to be downsampled, with shape (b, t, c, h, w).
-        kernel_size (int): Kernel size. Default: 13.
-        scale (int): Downsampling factor. Supported scale: (2, 3, 4).
-            Default: 4.
-
-    Returns:
-        Tensor: DUF downsampled frames.
-    """
-    assert scale in (2, 3, 4), f'Only support scale (2, 3, 4), but got {scale}.'
-
-    squeeze_flag = False
-    if x.ndim == 4:
-        squeeze_flag = True
-        x = x.unsqueeze(0)
-    b, t, c, h, w = x.size()
-    x = x.view(-1, 1, h, w)
-    pad_w, pad_h = kernel_size // 2 + scale * 2, kernel_size // 2 + scale * 2
-    x = F.pad(x, (pad_w, pad_w, pad_h, pad_h), 'reflect')
-
-    gaussian_filter = generate_gaussian_kernel(kernel_size, 0.4 * scale)
-    gaussian_filter = torch.from_numpy(gaussian_filter).type_as(x).unsqueeze(0).unsqueeze(0)
-    x = F.conv2d(x, gaussian_filter, stride=scale)
-    x = x[:, :, 2:-2, 2:-2]
-    x = x.view(b, t, c, x.size(2), x.size(3))
-    if squeeze_flag:
-        x = x.squeeze(0)
-    return x

CodeFormer/CodeFormer/basicsr/data/prefetch_dataloader.py

@@ -1,125 +0,0 @@
-import queue as Queue
-import threading
-import torch
-from torch.utils.data import DataLoader
-
-
-class PrefetchGenerator(threading.Thread):
-    """A general prefetch generator.
-
-    Ref:
-    https://stackoverflow.com/questions/7323664/python-generator-pre-fetch
-
-    Args:
-        generator: Python generator.
-        num_prefetch_queue (int): Number of prefetch queue.
-    """
-
-    def __init__(self, generator, num_prefetch_queue):
-        threading.Thread.__init__(self)
-        self.queue = Queue.Queue(num_prefetch_queue)
-        self.generator = generator
-        self.daemon = True
-        self.start()
-
-    def run(self):
-        for item in self.generator:
-            self.queue.put(item)
-        self.queue.put(None)
-
-    def __next__(self):
-        next_item = self.queue.get()
-        if next_item is None:
-            raise StopIteration
-        return next_item
-
-    def __iter__(self):
-        return self
-
-
-class PrefetchDataLoader(DataLoader):
-    """Prefetch version of dataloader.
-
-    Ref:
-    https://github.com/IgorSusmelj/pytorch-styleguide/issues/5#
-
-    TODO:
-    Need to test on single gpu and ddp (multi-gpu). There is a known issue in
-    ddp.
-
-    Args:
-        num_prefetch_queue (int): Number of prefetch queue.
-        kwargs (dict): Other arguments for dataloader.
-    """
-
-    def __init__(self, num_prefetch_queue, **kwargs):
-        self.num_prefetch_queue = num_prefetch_queue
-        super(PrefetchDataLoader, self).__init__(**kwargs)
-
-    def __iter__(self):
-        return PrefetchGenerator(super().__iter__(), self.num_prefetch_queue)
-
-
-class CPUPrefetcher():
-    """CPU prefetcher.
-
-    Args:
-        loader: Dataloader.
-    """
-
-    def __init__(self, loader):
-        self.ori_loader = loader
-        self.loader = iter(loader)
-
-    def next(self):
-        try:
-            return next(self.loader)
-        except StopIteration:
-            return None
-
-    def reset(self):
-        self.loader = iter(self.ori_loader)
-
-
-class CUDAPrefetcher():
-    """CUDA prefetcher.
-
-    Ref:
-    https://github.com/NVIDIA/apex/issues/304#
-
-    It may consums more GPU memory.
-
-    Args:
-        loader: Dataloader.
-        opt (dict): Options.
-    """
-
-    def __init__(self, loader, opt):
-        self.ori_loader = loader
-        self.loader = iter(loader)
-        self.opt = opt
-        self.stream = torch.cuda.Stream()
-        self.device = torch.device('cuda' if opt['num_gpu'] != 0 else 'cpu')
-        self.preload()
-
-    def preload(self):
-        try:
-            self.batch = next(self.loader)  # self.batch is a dict
-        except StopIteration:
-            self.batch = None
-            return None
-        # put tensors to gpu
-        with torch.cuda.stream(self.stream):
-            for k, v in self.batch.items():
-                if torch.is_tensor(v):
-                    self.batch[k] = self.batch[k].to(device=self.device, non_blocking=True)
-
-    def next(self):
-        torch.cuda.current_stream().wait_stream(self.stream)
-        batch = self.batch
-        self.preload()
-        return batch
-
-    def reset(self):
-        self.loader = iter(self.ori_loader)
-        self.preload()

CodeFormer/CodeFormer/basicsr/data/transforms.py

@@ -1,165 +0,0 @@
-import cv2
-import random
-
-
-def mod_crop(img, scale):
-    """Mod crop images, used during testing.
-
-    Args:
-        img (ndarray): Input image.
-        scale (int): Scale factor.
-
-    Returns:
-        ndarray: Result image.
-    """
-    img = img.copy()
-    if img.ndim in (2, 3):
-        h, w = img.shape[0], img.shape[1]
-        h_remainder, w_remainder = h % scale, w % scale
-        img = img[:h - h_remainder, :w - w_remainder, ...]
-    else:
-        raise ValueError(f'Wrong img ndim: {img.ndim}.')
-    return img
-
-
-def paired_random_crop(img_gts, img_lqs, gt_patch_size, scale, gt_path):
-    """Paired random crop.
-
-    It crops lists of lq and gt images with corresponding locations.
-
-    Args:
-        img_gts (list[ndarray] | ndarray): GT images. Note that all images
-            should have the same shape. If the input is an ndarray, it will
-            be transformed to a list containing itself.
-        img_lqs (list[ndarray] | ndarray): LQ images. Note that all images
-            should have the same shape. If the input is an ndarray, it will
-            be transformed to a list containing itself.
-        gt_patch_size (int): GT patch size.
-        scale (int): Scale factor.
-        gt_path (str): Path to ground-truth.
-
-    Returns:
-        list[ndarray] | ndarray: GT images and LQ images. If returned results
-            only have one element, just return ndarray.
-    """
-
-    if not isinstance(img_gts, list):
-        img_gts = [img_gts]
-    if not isinstance(img_lqs, list):
-        img_lqs = [img_lqs]
-
-    h_lq, w_lq, _ = img_lqs[0].shape
-    h_gt, w_gt, _ = img_gts[0].shape
-    lq_patch_size = gt_patch_size // scale
-
-    if h_gt != h_lq * scale or w_gt != w_lq * scale:
-        raise ValueError(f'Scale mismatches. GT ({h_gt}, {w_gt}) is not {scale}x ',
-                         f'multiplication of LQ ({h_lq}, {w_lq}).')
-    if h_lq < lq_patch_size or w_lq < lq_patch_size:
-        raise ValueError(f'LQ ({h_lq}, {w_lq}) is smaller than patch size '
-                         f'({lq_patch_size}, {lq_patch_size}). '
-                         f'Please remove {gt_path}.')
-
-    # randomly choose top and left coordinates for lq patch
-    top = random.randint(0, h_lq - lq_patch_size)
-    left = random.randint(0, w_lq - lq_patch_size)
-
-    # crop lq patch
-    img_lqs = [v[top:top + lq_patch_size, left:left + lq_patch_size, ...] for v in img_lqs]
-
-    # crop corresponding gt patch
-    top_gt, left_gt = int(top * scale), int(left * scale)
-    img_gts = [v[top_gt:top_gt + gt_patch_size, left_gt:left_gt + gt_patch_size, ...] for v in img_gts]
-    if len(img_gts) == 1:
-        img_gts = img_gts[0]
-    if len(img_lqs) == 1:
-        img_lqs = img_lqs[0]
-    return img_gts, img_lqs
-
-
-def augment(imgs, hflip=True, rotation=True, flows=None, return_status=False):
-    """Augment: horizontal flips OR rotate (0, 90, 180, 270 degrees).
-
-    We use vertical flip and transpose for rotation implementation.
-    All the images in the list use the same augmentation.
-
-    Args:
-        imgs (list[ndarray] | ndarray): Images to be augmented. If the input
-            is an ndarray, it will be transformed to a list.
-        hflip (bool): Horizontal flip. Default: True.
-        rotation (bool): Ratotation. Default: True.
-        flows (list[ndarray]: Flows to be augmented. If the input is an
-            ndarray, it will be transformed to a list.
-            Dimension is (h, w, 2). Default: None.
-        return_status (bool): Return the status of flip and rotation.
-            Default: False.
-
-    Returns:
-        list[ndarray] | ndarray: Augmented images and flows. If returned
-            results only have one element, just return ndarray.
-
-    """
-    hflip = hflip and random.random() < 0.5
-    vflip = rotation and random.random() < 0.5
-    rot90 = rotation and random.random() < 0.5
-
-    def _augment(img):
-        if hflip:  # horizontal
-            cv2.flip(img, 1, img)
-        if vflip:  # vertical
-            cv2.flip(img, 0, img)
-        if rot90:
-            img = img.transpose(1, 0, 2)
-        return img
-
-    def _augment_flow(flow):
-        if hflip:  # horizontal
-            cv2.flip(flow, 1, flow)
-            flow[:, :, 0] *= -1
-        if vflip:  # vertical
-            cv2.flip(flow, 0, flow)
-            flow[:, :, 1] *= -1
-        if rot90:
-            flow = flow.transpose(1, 0, 2)
-            flow = flow[:, :, [1, 0]]
-        return flow
-
-    if not isinstance(imgs, list):
-        imgs = [imgs]
-    imgs = [_augment(img) for img in imgs]
-    if len(imgs) == 1:
-        imgs = imgs[0]
-
-    if flows is not None:
-        if not isinstance(flows, list):
-            flows = [flows]
-        flows = [_augment_flow(flow) for flow in flows]
-        if len(flows) == 1:
-            flows = flows[0]
-        return imgs, flows
-    else:
-        if return_status:
-            return imgs, (hflip, vflip, rot90)
-        else:
-            return imgs
-
-
-def img_rotate(img, angle, center=None, scale=1.0):
-    """Rotate image.
-
-    Args:
-        img (ndarray): Image to be rotated.
-        angle (float): Rotation angle in degrees. Positive values mean
-            counter-clockwise rotation.
-        center (tuple[int]): Rotation center. If the center is None,
-            initialize it as the center of the image. Default: None.
-        scale (float): Isotropic scale factor. Default: 1.0.
-    """
-    (h, w) = img.shape[:2]
-
-    if center is None:
-        center = (w // 2, h // 2)
-
-    matrix = cv2.getRotationMatrix2D(center, angle, scale)
-    rotated_img = cv2.warpAffine(img, matrix, (w, h))
-    return rotated_img

CodeFormer/CodeFormer/basicsr/losses/__init__.py

@@ -1,26 +0,0 @@
-from copy import deepcopy
-
-from basicsr.utils import get_root_logger
-from basicsr.utils.registry import LOSS_REGISTRY
-from .losses import (CharbonnierLoss, GANLoss, L1Loss, MSELoss, PerceptualLoss, WeightedTVLoss, g_path_regularize,
-                     gradient_penalty_loss, r1_penalty)
-
-__all__ = [
-    'L1Loss', 'MSELoss', 'CharbonnierLoss', 'WeightedTVLoss', 'PerceptualLoss', 'GANLoss', 'gradient_penalty_loss',
-    'r1_penalty', 'g_path_regularize'
-]
-
-
-def build_loss(opt):
-    """Build loss from options.
-
-    Args:
-        opt (dict): Configuration. It must constain:
-            type (str): Model type.
-    """
-    opt = deepcopy(opt)
-    loss_type = opt.pop('type')
-    loss = LOSS_REGISTRY.get(loss_type)(**opt)
-    logger = get_root_logger()
-    logger.info(f'Loss [{loss.__class__.__name__}] is created.')
-    return loss