import os
import cv2

input_dir = "/scratch/ds5725/OOPS/images/"
output_dir = "/scratch/ds5725/OOPS/images_resized/"

os.makedirs(output_dir, exist_ok=True)

valid_ext = (".png", ".jpg", ".jpeg", ".bmp")

for fname in os.listdir(input_dir):
    if not fname.lower().endswith(valid_ext):
        continue

    input_path = os.path.join(input_dir, fname)
    output_path = os.path.join(output_dir, fname)

    img = cv2.imread(input_path)
    if img is None:
        print(f"Skipping unreadable file: {fname}")
        continue

    h, w = img.shape[:2]
    new_h = h // 4
    new_w = w // 4

    resized = cv2.resize(img, (new_w, new_h), interpolation=cv2.INTER_AREA)
    cv2.imwrite(output_path, resized)

    print(f"{fname}: {h}x{w} -> {new_h}x{new_w}")

print("All images resized successfully.")