Merge RGB Channels

Problem

Merge three single-channel images into one RGB image.

Given 2D lists r, g and b of the same shape, return a 2D list where each pixel is [r[i][j], g[i][j], b[i][j]]. Empty inputs return [].

Hint

Zip the three grids position by position into pixel triples.

case 1

in: [[[1,2],[3,4]],[[5,6],[7,8]],[[9,10],[11,12]]]

expected: [[[1,5,9],[2,6,10]],[[3,7,11],[4,8,12]]]

case 2

in: [[[10]],[[20]],[[30]]]

expected: [[[10,20,30]]]

case 3

in: [[],[],[]]

expected: []

Starter codePython

def merge_channels(r, g, b):
    # Your code here
    pass

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