To apply this filter to a colour image img we call. sepia_img = img.dot(sepia_matrix.T) Since sepia matrix rows do not have unit sums, once the full sepia image is constructed, we need to rescale the ...

At first, it may be difficult to wrap your head around a 3D array. After all, visualizing in 3D can be challenging. However, it is best to view an image as a matrix of pixels, where the third ...