4. Write Matlab code to create the following intensity image of type double: 17 33 49 65 81 97 113 1 17 33 49 65 81 97 113 The image is of size 128x128. The diagonal lines have the value 1 and the background has the value 0. 5. The function randperm in Matlab urns a random permutation of the integers 1:n. This is an example how to use it randperm(6) might be the vector [3 2 6 4 1 5] or it might be some other permutation of 1:6. You are asked to use this function is order to shuffle the pixels of an image then to restore the original image from the permuted image. Example of the expected result: Original Image Permuted Image Restored Image