how to write program in matlab for dividing image into blocks

[blessy]

how to write program in matlab for dividing image into blocks

 

[silentplanner]

im=rand(256);
[n,m]=size(im);
p=4
aa=1:n
bb=1:m
[ii,jj]=ndgrid(aa,bb)
out=arrayfun(@(x,y) im(x:x+p-1,y:y+p-1),ii,jj,'un',0)