Consider the following 2 x 2 spatial-domain image where the pixel with value -1 has coordinates equal to (0,0). -1 0 0 1 (a) (10 pts) Compute the 2-D DFT magnitude and give the result in a 2 x 2 array. (b) (10 pts) Compute the 2-D DFT phase and give the result in a 2 x 2 array.