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from argparse import ArgumentParser, Namespace
from pathlib import Path
from multiprocessing import Pool
import shutil
import glob
from tqdm import tqdm
from loggez import loggez_logger as logger
import numpy as np
def w2c(x: np.ndarray, cm: np.ndarray) -> np.ndarray:
x1 = (x - 0.5) * 2 # [0:1] -> [-1: 1]
x2 = x1 @ np.linalg.inv(cm) # [-1: 1] -> [-1: 1]
return x2.clip(-1, 1)
def load(path: Path) -> np.ndarray:
return np.load(path, allow_pickle=True)["arr_0"]
def do_one(args: tuple[Path, Path, Path]):
in_path, cm_path, out_path = args
in_np, cm_np = load(in_path), load(cm_path)
out_np = w2c(in_np.astype(np.float32), cm_np).astype(in_np.dtype)
np.savez_compressed(out_path, out_np)
def get_args() -> Namespace:
parser = ArgumentParser()
parser.add_argument("in_dir", type=Path)
parser.add_argument("camera_parameters_dir", type=Path)
parser.add_argument("--out_dir", "-o", type=Path, required=True)
parser.add_argument("--overwrite", action="store_true")
parser.add_argument("--n_workers", type=int, default=0)
args = parser.parse_args()
assert not args.out_dir.exists() or args.overwrite, f"'{args.out_dir}' exists. Use --overwrite"
return args
def main(args: Namespace):
logger.info(f"- In dir: '{args.in_dir}'")
logger.info(f"- Camera Parameters dir: '{args.camera_parameters_dir}'")
logger.info(f"- Out dir: '{args.camera_parameters_dir}'")
in_paths = list(map(Path, glob.glob(f"{args.in_dir}/**/*.npz", recursive=True)))
out_paths = [args.out_dir / in_path.name for in_path in in_paths]
assert len(in_paths) > 0, (args.in_dir, in_paths)
logger.info(f"npz files found: {len(in_paths)}")
shutil.rmtree(args.out_dir, ignore_errors=True)
Path(args.out_dir).mkdir()
cm_paths = []
for path in in_paths:
path_split = path.stem.split("_")
scene, scene_ix = "_".join(path_split[0:-1]), path_split[-1]
cm_path = Path(args.camera_parameters_dir) / scene / f"cameraRotationMatrices/{scene_ix:0>6}.npz"
assert cm_path.exists(), (path, cm_path)
cm_paths.append(cm_path)
logger.info("Found all camera matrices paths")
map_fn = map if args.n_workers == 0 else Pool(args.n_workers).imap
list(map_fn(do_one, tqdm(zip(in_paths, cm_paths, out_paths), total=len(in_paths))))
if __name__ == "__main__":
main(get_args())
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