| from tqdm import tqdm | |
| import os | |
| from PIL import Image | |
| import numpy as np | |
| import argparse | |
| def create_npz_from_sample_folder(sample_dir, num=50_000): | |
| """ | |
| Builds a single .npz file from a folder of .png samples. | |
| """ | |
| samples = [] | |
| for file in tqdm(os.listdir(sample_dir), desc="Building .npz file from samples"): | |
| sample_pil = Image.open(f"{sample_dir}/{file}") | |
| sample_np = np.asarray(sample_pil).astype(np.uint8) | |
| samples.append(sample_np) | |
| samples = np.stack(samples) | |
| npz_path = f"{sample_dir}.npz" | |
| np.savez(npz_path, arr_0=samples) | |
| print(f"Saved .npz file to {npz_path} [shape={samples.shape}].") | |
| return npz_path | |
| if __name__ == "__main__": | |
| parser = argparse.ArgumentParser() | |
| parser.add_argument("--generated-images", type=str, required=True) | |
| args = parser.parse_args() | |
| num_fid_samples = 50000 | |
| create_npz_from_sample_folder(args.generated_images, num_fid_samples) | |
| print("Done.") |