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38 lines
1.6 KiB
Python
38 lines
1.6 KiB
Python
import cv2
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import sys
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import argparse
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import numpy as np
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def is_blank_image(image_path, threshold=10, white_percent=99, white_value=255, blur_size=5):
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image = cv2.imread(image_path, cv2.IMREAD_GRAYSCALE)
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if image is None:
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print(f"Error: Unable to read the image file: {image_path}")
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return False
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# Apply Gaussian blur to reduce noise
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blurred_image = cv2.GaussianBlur(image, (blur_size, blur_size), 0)
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_, thresholded_image = cv2.threshold(blurred_image, white_value - threshold, white_value, cv2.THRESH_BINARY)
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# Calculate the percentage of white pixels in the thresholded image
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white_pixels = np.sum(thresholded_image == white_value)
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white_pixel_percentage = (white_pixels / thresholded_image.size) * 100
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print(f"Page has white pixel percent of {white_pixel_percentage}")
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return white_pixel_percentage >= white_percent
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description='Detect if an image is considered blank or not.')
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parser.add_argument('image_path', help='The path to the image file.')
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parser.add_argument('-t', '--threshold', type=int, default=10, help='Threshold for determining white pixels. The default value is 10.')
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parser.add_argument('-w', '--white_percent', type=float, default=99, help='The percentage of white pixels for an image to be considered blank. The default value is 99.')
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args = parser.parse_args()
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blank = is_blank_image(args.image_path, args.threshold, args.white_percent)
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# Return code 1: The image is considered blank.
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# Return code 0: The image is not considered blank.
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sys.exit(int(blank))
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