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# DiffEdit | |
[[open-in-colab]] | |
์ด๋ฏธ์ง ํธ์ง์ ํ๋ ค๋ฉด ์ผ๋ฐ์ ์ผ๋ก ํธ์งํ ์์ญ์ ๋ง์คํฌ๋ฅผ ์ ๊ณตํด์ผ ํฉ๋๋ค. DiffEdit๋ ํ ์คํธ ์ฟผ๋ฆฌ๋ฅผ ๊ธฐ๋ฐ์ผ๋ก ๋ง์คํฌ๋ฅผ ์๋์ผ๋ก ์์ฑํ๋ฏ๋ก ์ด๋ฏธ์ง ํธ์ง ์ํํธ์จ์ด ์์ด๋ ๋ง์คํฌ๋ฅผ ๋ง๋ค๊ธฐ๊ฐ ์ ๋ฐ์ ์ผ๋ก ๋ ์ฌ์์ง๋๋ค. DiffEdit ์๊ณ ๋ฆฌ์ฆ์ ์ธ ๋จ๊ณ๋ก ์๋ํฉ๋๋ค: | |
1. Diffusion ๋ชจ๋ธ์ด ์ผ๋ถ ์ฟผ๋ฆฌ ํ ์คํธ์ ์ฐธ์กฐ ํ ์คํธ๋ฅผ ์กฐ๊ฑด๋ถ๋ก ์ด๋ฏธ์ง์ ๋ ธ์ด์ฆ๋ฅผ ์ ๊ฑฐํ์ฌ ์ด๋ฏธ์ง์ ์ฌ๋ฌ ์์ญ์ ๋ํด ์๋ก ๋ค๋ฅธ ๋ ธ์ด์ฆ ์ถ์ ์น๋ฅผ ์์ฑํ๊ณ , ๊ทธ ์ฐจ์ด๋ฅผ ์ฌ์ฉํ์ฌ ์ฟผ๋ฆฌ ํ ์คํธ์ ์ผ์นํ๋๋ก ์ด๋ฏธ์ง์ ์ด๋ ์์ญ์ ๋ณ๊ฒฝํด์ผ ํ๋์ง ์๋ณํ๊ธฐ ์ํ ๋ง์คํฌ๋ฅผ ์ถ๋ก ํฉ๋๋ค. | |
2. ์ ๋ ฅ ์ด๋ฏธ์ง๊ฐ DDIM์ ์ฌ์ฉํ์ฌ ์ ์ฌ ๊ณต๊ฐ์ผ๋ก ์ธ์ฝ๋ฉ๋ฉ๋๋ค. | |
3. ๋ง์คํฌ ์ธ๋ถ์ ํฝ์ ์ด ์ ๋ ฅ ์ด๋ฏธ์ง์ ๋์ผํ๊ฒ ์ ์ง๋๋๋ก ๋ง์คํฌ๋ฅผ ๊ฐ์ด๋๋ก ์ฌ์ฉํ์ฌ ํ ์คํธ ์ฟผ๋ฆฌ์ ์กฐ๊ฑด์ด ์ง์ ๋ diffusion ๋ชจ๋ธ๋ก latents๋ฅผ ๋์ฝ๋ฉํฉ๋๋ค. | |
์ด ๊ฐ์ด๋์์๋ ๋ง์คํฌ๋ฅผ ์๋์ผ๋ก ๋ง๋ค์ง ์๊ณ DiffEdit๋ฅผ ์ฌ์ฉํ์ฌ ์ด๋ฏธ์ง๋ฅผ ํธ์งํ๋ ๋ฐฉ๋ฒ์ ์ค๋ช ํฉ๋๋ค. | |
์์ํ๊ธฐ ์ ์ ๋ค์ ๋ผ์ด๋ธ๋ฌ๋ฆฌ๊ฐ ์ค์น๋์ด ์๋์ง ํ์ธํ์ธ์: | |
```py | |
# Colab์์ ํ์ํ ๋ผ์ด๋ธ๋ฌ๋ฆฌ๋ฅผ ์ค์นํ๊ธฐ ์ํด ์ฃผ์์ ์ ์ธํ์ธ์ | |
#!pip install -q diffusers transformers accelerate | |
``` | |
[`StableDiffusionDiffEditPipeline`]์๋ ์ด๋ฏธ์ง ๋ง์คํฌ์ ๋ถ๋ถ์ ์ผ๋ก ๋ฐ์ ๋ latents ์งํฉ์ด ํ์ํฉ๋๋ค. ์ด๋ฏธ์ง ๋ง์คํฌ๋ [`~StableDiffusionDiffEditPipeline.generate_mask`] ํจ์์์ ์์ฑ๋๋ฉฐ, ๋ ๊ฐ์ ํ๋ผ๋ฏธํฐ์ธ `source_prompt`์ `target_prompt`๊ฐ ํฌํจ๋ฉ๋๋ค. ์ด ๋งค๊ฐ๋ณ์๋ ์ด๋ฏธ์ง์์ ๋ฌด์์ ํธ์งํ ์ง ๊ฒฐ์ ํฉ๋๋ค. ์๋ฅผ ๋ค์ด, *๊ณผ์ผ* ํ ๊ทธ๋ฆ์ *๋ฐฐ* ํ ๊ทธ๋ฆ์ผ๋ก ๋ณ๊ฒฝํ๋ ค๋ฉด ๋ค์๊ณผ ๊ฐ์ด ํ์ธ์: | |
```py | |
source_prompt = "a bowl of fruits" | |
target_prompt = "a bowl of pears" | |
``` | |
๋ถ๋ถ์ ์ผ๋ก ๋ฐ์ ๋ latents๋ [`~StableDiffusionDiffEditPipeline.invert`] ํจ์์์ ์์ฑ๋๋ฉฐ, ์ผ๋ฐ์ ์ผ๋ก ์ด๋ฏธ์ง๋ฅผ ์ค๋ช ํ๋ `prompt` ๋๋ *์บก์ *์ ํฌํจํ๋ ๊ฒ์ด inverse latent sampling ํ๋ก์ธ์ค๋ฅผ ๊ฐ์ด๋ํ๋ ๋ฐ ๋์์ด ๋ฉ๋๋ค. ์บก์ ์ ์ข ์ข `source_prompt`๊ฐ ๋ ์ ์์ง๋ง, ๋ค๋ฅธ ํ ์คํธ ์ค๋ช ์ผ๋ก ์์ ๋กญ๊ฒ ์คํํด ๋ณด์ธ์! | |
ํ์ดํ๋ผ์ธ, ์ค์ผ์ค๋ฌ, ์ญ ์ค์ผ์ค๋ฌ๋ฅผ ๋ถ๋ฌ์ค๊ณ ๋ฉ๋ชจ๋ฆฌ ์ฌ์ฉ๋์ ์ค์ด๊ธฐ ์ํด ๋ช ๊ฐ์ง ์ต์ ํ๋ฅผ ํ์ฑํํด ๋ณด๊ฒ ์ต๋๋ค: | |
```py | |
import torch | |
from diffusers import DDIMScheduler, DDIMInverseScheduler, StableDiffusionDiffEditPipeline | |
pipeline = StableDiffusionDiffEditPipeline.from_pretrained( | |
"stabilityai/stable-diffusion-2-1", | |
torch_dtype=torch.float16, | |
safety_checker=None, | |
use_safetensors=True, | |
) | |
pipeline.scheduler = DDIMScheduler.from_config(pipeline.scheduler.config) | |
pipeline.inverse_scheduler = DDIMInverseScheduler.from_config(pipeline.scheduler.config) | |
pipeline.enable_model_cpu_offload() | |
pipeline.enable_vae_slicing() | |
``` | |
์์ ํ๊ธฐ ์ํ ์ด๋ฏธ์ง๋ฅผ ๋ถ๋ฌ์ต๋๋ค: | |
```py | |
from diffusers.utils import load_image, make_image_grid | |
img_url = "https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png" | |
raw_image = load_image(img_url).resize((768, 768)) | |
raw_image | |
``` | |
์ด๋ฏธ์ง ๋ง์คํฌ๋ฅผ ์์ฑํ๊ธฐ ์ํด [`~StableDiffusionDiffEditPipeline.generate_mask`] ํจ์๋ฅผ ์ฌ์ฉํฉ๋๋ค. ์ด๋ฏธ์ง์์ ํธ์งํ ๋ด์ฉ์ ์ง์ ํ๊ธฐ ์ํด `source_prompt`์ `target_prompt`๋ฅผ ์ ๋ฌํด์ผ ํฉ๋๋ค: | |
```py | |
from PIL import Image | |
source_prompt = "a bowl of fruits" | |
target_prompt = "a basket of pears" | |
mask_image = pipeline.generate_mask( | |
image=raw_image, | |
source_prompt=source_prompt, | |
target_prompt=target_prompt, | |
) | |
Image.fromarray((mask_image.squeeze()*255).astype("uint8"), "L").resize((768, 768)) | |
``` | |
๋ค์์ผ๋ก, ๋ฐ์ ๋ latents๋ฅผ ์์ฑํ๊ณ ์ด๋ฏธ์ง๋ฅผ ๋ฌ์ฌํ๋ ์บก์ ์ ์ ๋ฌํฉ๋๋ค: | |
```py | |
inv_latents = pipeline.invert(prompt=source_prompt, image=raw_image).latents | |
``` | |
๋ง์ง๋ง์ผ๋ก, ์ด๋ฏธ์ง ๋ง์คํฌ์ ๋ฐ์ ๋ latents๋ฅผ ํ์ดํ๋ผ์ธ์ ์ ๋ฌํฉ๋๋ค. `target_prompt`๋ ์ด์ `prompt`๊ฐ ๋๋ฉฐ, `source_prompt`๋ `negative_prompt`๋ก ์ฌ์ฉ๋ฉ๋๋ค. | |
```py | |
output_image = pipeline( | |
prompt=target_prompt, | |
mask_image=mask_image, | |
image_latents=inv_latents, | |
negative_prompt=source_prompt, | |
).images[0] | |
mask_image = Image.fromarray((mask_image.squeeze()*255).astype("uint8"), "L").resize((768, 768)) | |
make_image_grid([raw_image, mask_image, output_image], rows=1, cols=3) | |
``` | |
<div class="flex gap-4"> | |
<div> | |
<img class="rounded-xl" src="https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"/> | |
<figcaption class="mt-2 text-center text-sm text-gray-500">original image</figcaption> | |
</div> | |
<div> | |
<img class="rounded-xl" src="https://github.com/Xiang-cd/DiffEdit-stable-diffusion/blob/main/assets/target.png?raw=true"/> | |
<figcaption class="mt-2 text-center text-sm text-gray-500">edited image</figcaption> | |
</div> | |
</div> | |
## Source์ target ์๋ฒ ๋ฉ ์์ฑํ๊ธฐ | |
Source์ target ์๋ฒ ๋ฉ์ ์๋์ผ๋ก ์์ฑํ๋ ๋์ [Flan-T5](https://huggingface.co/docs/transformers/model_doc/flan-t5) ๋ชจ๋ธ์ ์ฌ์ฉํ์ฌ ์๋์ผ๋ก ์์ฑํ ์ ์์ต๋๋ค. | |
Flan-T5 ๋ชจ๋ธ๊ณผ ํ ํฌ๋์ด์ ๋ฅผ ๐ค Transformers ๋ผ์ด๋ธ๋ฌ๋ฆฌ์์ ๋ถ๋ฌ์ต๋๋ค: | |
```py | |
import torch | |
from transformers import AutoTokenizer, T5ForConditionalGeneration | |
tokenizer = AutoTokenizer.from_pretrained("google/flan-t5-large") | |
model = T5ForConditionalGeneration.from_pretrained("google/flan-t5-large", device_map="auto", torch_dtype=torch.float16) | |
``` | |
๋ชจ๋ธ์ ํ๋กฌํํธํ source์ target ํ๋กฌํํธ๋ฅผ ์์ฑํ๊ธฐ ์ํด ์ด๊ธฐ ํ ์คํธ๋ค์ ์ ๊ณตํฉ๋๋ค. | |
```py | |
source_concept = "bowl" | |
target_concept = "basket" | |
source_text = f"Provide a caption for images containing a {source_concept}. " | |
"The captions should be in English and should be no longer than 150 characters." | |
target_text = f"Provide a caption for images containing a {target_concept}. " | |
"The captions should be in English and should be no longer than 150 characters." | |
``` | |
๋ค์์ผ๋ก, ํ๋กฌํํธ๋ค์ ์์ฑํ๊ธฐ ์ํด ์ ํธ๋ฆฌํฐ ํจ์๋ฅผ ์์ฑํฉ๋๋ค. | |
```py | |
@torch.no_grad() | |
def generate_prompts(input_prompt): | |
input_ids = tokenizer(input_prompt, return_tensors="pt").input_ids.to("cuda") | |
outputs = model.generate( | |
input_ids, temperature=0.8, num_return_sequences=16, do_sample=True, max_new_tokens=128, top_k=10 | |
) | |
return tokenizer.batch_decode(outputs, skip_special_tokens=True) | |
source_prompts = generate_prompts(source_text) | |
target_prompts = generate_prompts(target_text) | |
print(source_prompts) | |
print(target_prompts) | |
``` | |
<Tip> | |
๋ค์ํ ํ์ง์ ํ ์คํธ๋ฅผ ์์ฑํ๋ ์ ๋ต์ ๋ํด ์์ธํ ์์๋ณด๋ ค๋ฉด [์์ฑ ์ ๋ต](https://huggingface.co/docs/transformers/main/en/generation_strategies) ๊ฐ์ด๋๋ฅผ ์ฐธ์กฐํ์ธ์. | |
</Tip> | |
ํ ์คํธ ์ธ์ฝ๋ฉ์ ์ํด [`StableDiffusionDiffEditPipeline`]์์ ์ฌ์ฉํ๋ ํ ์คํธ ์ธ์ฝ๋ ๋ชจ๋ธ์ ๋ถ๋ฌ์ต๋๋ค. ํ ์คํธ ์ธ์ฝ๋๋ฅผ ์ฌ์ฉํ์ฌ ํ ์คํธ ์๋ฒ ๋ฉ์ ๊ณ์ฐํฉ๋๋ค: | |
```py | |
import torch | |
from diffusers import StableDiffusionDiffEditPipeline | |
pipeline = StableDiffusionDiffEditPipeline.from_pretrained( | |
"stabilityai/stable-diffusion-2-1", torch_dtype=torch.float16, use_safetensors=True | |
) | |
pipeline.enable_model_cpu_offload() | |
pipeline.enable_vae_slicing() | |
@torch.no_grad() | |
def embed_prompts(sentences, tokenizer, text_encoder, device="cuda"): | |
embeddings = [] | |
for sent in sentences: | |
text_inputs = tokenizer( | |
sent, | |
padding="max_length", | |
max_length=tokenizer.model_max_length, | |
truncation=True, | |
return_tensors="pt", | |
) | |
text_input_ids = text_inputs.input_ids | |
prompt_embeds = text_encoder(text_input_ids.to(device), attention_mask=None)[0] | |
embeddings.append(prompt_embeds) | |
return torch.concatenate(embeddings, dim=0).mean(dim=0).unsqueeze(0) | |
source_embeds = embed_prompts(source_prompts, pipeline.tokenizer, pipeline.text_encoder) | |
target_embeds = embed_prompts(target_prompts, pipeline.tokenizer, pipeline.text_encoder) | |
``` | |
๋ง์ง๋ง์ผ๋ก, ์๋ฒ ๋ฉ์ [`~StableDiffusionDiffEditPipeline.generate_mask`] ๋ฐ [`~StableDiffusionDiffEditPipeline.invert`] ํจ์์ ํ์ดํ๋ผ์ธ์ ์ ๋ฌํ์ฌ ์ด๋ฏธ์ง๋ฅผ ์์ฑํฉ๋๋ค: | |
```diff | |
from diffusers import DDIMInverseScheduler, DDIMScheduler | |
from diffusers.utils import load_image, make_image_grid | |
from PIL import Image | |
pipeline.scheduler = DDIMScheduler.from_config(pipeline.scheduler.config) | |
pipeline.inverse_scheduler = DDIMInverseScheduler.from_config(pipeline.scheduler.config) | |
img_url = "https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png" | |
raw_image = load_image(img_url).resize((768, 768)) | |
mask_image = pipeline.generate_mask( | |
image=raw_image, | |
- source_prompt=source_prompt, | |
- target_prompt=target_prompt, | |
+ source_prompt_embeds=source_embeds, | |
+ target_prompt_embeds=target_embeds, | |
) | |
inv_latents = pipeline.invert( | |
- prompt=source_prompt, | |
+ prompt_embeds=source_embeds, | |
image=raw_image, | |
).latents | |
output_image = pipeline( | |
mask_image=mask_image, | |
image_latents=inv_latents, | |
- prompt=target_prompt, | |
- negative_prompt=source_prompt, | |
+ prompt_embeds=target_embeds, | |
+ negative_prompt_embeds=source_embeds, | |
).images[0] | |
mask_image = Image.fromarray((mask_image.squeeze()*255).astype("uint8"), "L") | |
make_image_grid([raw_image, mask_image, output_image], rows=1, cols=3) | |
``` | |
## ๋ฐ์ ์ ์ํ ์บก์ ์์ฑํ๊ธฐ | |
`source_prompt`๋ฅผ ์บก์ ์ผ๋ก ์ฌ์ฉํ์ฌ ๋ถ๋ถ์ ์ผ๋ก ๋ฐ์ ๋ latents๋ฅผ ์์ฑํ ์ ์์ง๋ง, [BLIP](https://huggingface.co/docs/transformers/model_doc/blip) ๋ชจ๋ธ์ ์ฌ์ฉํ์ฌ ์บก์ ์ ์๋์ผ๋ก ์์ฑํ ์๋ ์์ต๋๋ค. | |
๐ค Transformers ๋ผ์ด๋ธ๋ฌ๋ฆฌ์์ BLIP ๋ชจ๋ธ๊ณผ ํ๋ก์ธ์๋ฅผ ๋ถ๋ฌ์ต๋๋ค: | |
```py | |
import torch | |
from transformers import BlipForConditionalGeneration, BlipProcessor | |
processor = BlipProcessor.from_pretrained("Salesforce/blip-image-captioning-base") | |
model = BlipForConditionalGeneration.from_pretrained("Salesforce/blip-image-captioning-base", torch_dtype=torch.float16, low_cpu_mem_usage=True) | |
``` | |
์ ๋ ฅ ์ด๋ฏธ์ง์์ ์บก์ ์ ์์ฑํ๋ ์ ํธ๋ฆฌํฐ ํจ์๋ฅผ ๋ง๋ญ๋๋ค: | |
```py | |
@torch.no_grad() | |
def generate_caption(images, caption_generator, caption_processor): | |
text = "a photograph of" | |
inputs = caption_processor(images, text, return_tensors="pt").to(device="cuda", dtype=caption_generator.dtype) | |
caption_generator.to("cuda") | |
outputs = caption_generator.generate(**inputs, max_new_tokens=128) | |
# ์บก์ generator ์คํ๋ก๋ | |
caption_generator.to("cpu") | |
caption = caption_processor.batch_decode(outputs, skip_special_tokens=True)[0] | |
return caption | |
``` | |
์ ๋ ฅ ์ด๋ฏธ์ง๋ฅผ ๋ถ๋ฌ์ค๊ณ `generate_caption` ํจ์๋ฅผ ์ฌ์ฉํ์ฌ ํด๋น ์ด๋ฏธ์ง์ ๋ํ ์บก์ ์ ์์ฑํฉ๋๋ค: | |
```py | |
from diffusers.utils import load_image | |
img_url = "https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png" | |
raw_image = load_image(img_url).resize((768, 768)) | |
caption = generate_caption(raw_image, model, processor) | |
``` | |
<div class="flex justify-center"> | |
<figure> | |
<img class="rounded-xl" src="https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"/> | |
<figcaption class="text-center">generated caption: "a photograph of a bowl of fruit on a table"</figcaption> | |
</figure> | |
</div> | |
์ด์ ์บก์ ์ [`~StableDiffusionDiffEditPipeline.invert`] ํจ์์ ๋์ ๋ถ๋ถ์ ์ผ๋ก ๋ฐ์ ๋ latents๋ฅผ ์์ฑํ ์ ์์ต๋๋ค! | |