A python script to extract edges from a glob of images.

extract_edges.py

#!/usr/bin/env python
"""Extract edges from a glob of files."""
import argparse
import glob
import os

import cv2


def main(config):
    for filename in glob.glob(config.source_glob):
        img = cv2.imread(filename, 0)
        edges = cv2.Canny(img, config.t1, config.t2)
        out_filename = os.path.join(
            config.destination, os.path.basename(filename))
        cv2.imwrite(out_filename, edges)
        print('{} -> {}'.format(filename, out_filename))


if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('source_glob')
    parser.add_argument('destination')
    parser.add_argument('--t1', default=60, help='Threshold 1')
    parser.add_argument('--t2', default=60, help='Threshold 2')
    config = parser.parse_args()
    main(config)