hello, i m new to matlab,,, plz help me ....how can we divide an image into overlapping blocks?

for gray scale image

Answer 1

[Image Analyst]

blockproc() can do that. Or you can use just regular indexing where you specify yourImage(row1:row2, col1:col2) if you specify the rows and columns correctly. E.g.

block1 = yourImage(1:50, 1:50);
block2 = yourImage(10:60, 1:50); % Overlap of 41 pixels vertically.

Answer 2

[Thorsten]

If your have a function FUN to be applied to each block, you can use

B = nlfilter(A, [M N], FUN)