divide an image region into 4x4 blocks

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fereshte
fereshte 2014-3-27
编辑： fereshte 2014-3-28
How do I divide an image region into 4x4 blocks and then For each block, calculate the mean value of the block?

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Joseph Cheng
Joseph Cheng 2014-3-27
You can try to use blockproc(A,[4 4],fun) where fun is a function which does mean(mean(block_struct.data))

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Image Analyst
Image Analyst 2014-3-28
See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_split_an_image_into_non-overlapping_blocks.3F as well as my two attached blockproc demos.
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fereshte
fereshte 2014-3-28
编辑：fereshte 2014-3-28
thank you.
1.can you divide image to 3*3 blocks with blockproc_demo2.m?
2.how i can calculate mean just for fifth window in 3*3 blocks?

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