Display RGB values in image's pixels

pixelviewer.py

#!/usr/bin/python3
# Display RGB values in image's pixels.

import sys

import cv2


def main():
    fpath = sys.argv[1]
    im = cv2.cvtColor(cv2.imread(fpath), cv2.COLOR_BGR2RGB)
    h, w, c = im.shape
    print('(x, y) R G B')
    for i in range(h):
        for j in range(w):
            print('(%3d, %3d) %3d, %3d, %3d' % (j, i,
                                                im[i][j][0],
                                                im[i][j][1],
                                                im[i][j][2]))


if __name__ == '__main__':
    main()