Sepia Filter

Problem

Apply the classic sepia transform to an RGB image.

tr = 0.393r + 0.769g + 0.189b, tg = 0.349r + 0.686g + 0.168b and tb = 0.272r + 0.534g + 0.131b. Each channel is rounded to the nearest integer and clamped to [0, 255].

Test cases

case 1

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

expected: [[[100,89,69]]]

case 2

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

expected: [[[196,175,136]]]

case 3

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

expected: [[[48,43,33]]]

case 4

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

expected: [[[255,255,239],[0,0,0]]]

Starter codePython

def sepia(image):
    # Your code here
    pass

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