Zooming

zoom(M, hscale, vscale) Returns matrix M resized by factor hscale horizontally and vscale vertically.

Arguments:

• M is an image matrix.
• hscale, vscale are positive, nonzero real numbers.

Notes:

• It is suggested that you not use excessively large values for hscale or vscale, because of unreasonable computation times and display problems.