12. Given the following image, I and directional kernels G, Gy: r0 1 1 17 1 1 I =|0 0 1 1 Lo 1 1, G, =1 0 Lo o 1 1 Gy = 1. 1- Compute the magnitude and the angle (in degrees) of the gradient at each valid location in the image (without zero-padding) (5pts).