crop_images.m

kmeans clustering in matlab

function cropped_images = crop_images(images,x1,x2,y1,y2);
%
% function to take CS 175 data structure of images and to
% crop each image so that the lowerleft corner has
% coordinate [x1,y1] and the upper right corner has coordinate [x2,y2]


[n1 n2] = size(images);  % assumes that data structure is a 2d array

cropped_images = images;

for i=1:n1;
    for  j=1:n2;
        oldimage = images(i,j).image;
        if size(oldimage,1)>1
        cropped_images(i,j).image = oldimage(x1:x2,y1:y2);
        end
    end
end