How i can do sub-sampling for an image by its pixels

Hi I want sub-sample a image by its pixels, can any one help. Thanks in advance

Answer 1

[Image Analyst]

For example, to subsample by a factor of 2 in the x direction and 3 in the y direction:

smallImage = bigImage(1:3:end, 1:2:end);  % Remember (row, column) = (y, x) NOT (x,y)