Emboss Filter

Problem

Apply the 3x3 emboss kernel [[-2, -1, 0], [-1, 1, 1], [0, 1, 2]] to a grayscale image.

Use valid-mode cross-correlation and return integer values. Negative results are allowed: no clamping or offset is applied.

case 1

in: [[[4,4,4],[4,4,4],[4,4,4]]]

expected: [[4]]

case 2

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

expected: [[29]]

case 3

in: [[[1,1,1,1],[1,5,5,1],[1,5,5,1],[1,1,1,1]]]

expected: [[21,5],[5,-11]]

Starter codePython

def emboss(image):
    # Your code here
    pass

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