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#!/usr/bin/env python2
from __future__ import print_function
import argparse
import cv2
import os
import re
import sys
PROG_NAME = os.path.basename(sys.argv[0])
def die(msg):
print('{}: error: {}'.format(PROG_NAME, msg), file=sys.stderr)
sys.exit(1)
def parse_args():
p = argparse.ArgumentParser()
p.add_argument('src_filename')
p.add_argument('dest_filename')
return p.parse_args()
def main():
args = parse_args()
src_filename = args.src_filename
dest_filename = args.dest_filename
if re.search('grayscale', dest_filename):
imread_flags = cv2.IMREAD_GRAYSCALE
else:
imread_flags = cv2.IMREAD_COLOR
img = cv2.imread(src_filename, imread_flags)
match = re.search(r'(\d+)x(\d+)', dest_filename)
if match is None:
die('dest_filename {!r} contains no size'.format(dest_filename))
width = int(match.groups(0)[0])
height = int(match.groups(0)[1])
res = cv2.resize(img, (width, height), interpolation = cv2.INTER_CUBIC)
cv2.imwrite(dest_filename, res)
if __name__ == '__main__':
main()
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