Color Histogram RGB

Problem

Compute per-channel histograms of an RGB image with a fixed number of bins.

The bin index for a value v is v * bins // 256. Return [red_hist, green_hist, blue_hist], each a list of bins counts.

case 1

in: [[[[0,255,128],[64,64,255]]],4]

expected: [[1,1,0,0],[0,1,0,1],[0,0,1,1]]

case 2

in: [[[[0,0,0],[255,255,255]]],2]

expected: [[1,1],[1,1],[1,1]]

case 3

in: [[[[10,20,30],[250,240,230]]],4]

expected: [[1,0,0,1],[1,0,0,1],[1,0,0,1]]

Starter codePython

def rgb_histogram(image, bins):
    # Your code here
    pass

3 test cases · run your code against them in the editor