Convert an image into a json array.

im2gitfiti.py

from PIL import Image
im = Image.open('banner.png').convert('RGB')

width, height = im.size
col_start = -1
for c in range(width):
    content = False
    for r in range(height):
        color = im.getpixel((c, r))
        if color != (255, 255, 255):
            content = True
            break
    if content:
        col_start = c
        break

for r in range(height):
    row_data = []
    for c in range(col_start, width):
        color = im.getpixel((c, r))
        if color == (255, 255, 255):
            val = 0
        else:
            val = 4
        row_data.append(val)
    print(row_data)