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From: hari prasad on 18 Feb 2010 11:26
Hi,
Iam doing a project on image compression and to use DCT on an image i need to divide the image into 8*8blocks.
blkproc is the command which only functions on the blocks which are generated.Is there any other command in matlab which allows formation of blocks .
Else how can we write a nested for-loop to select the blocks so that it iterates 8 times and then stops and continues from the ninth time.
Thanks in advance
From: Brendan Hannigan on 19 Feb 2010 08:47
"hari prasad" <hariprasadm.89(a)gmail.com> wrote in message <hljpmt$p2l$1(a)fred.mathworks.com>...
> Hi,
> Iam doing a project on image compression and to use DCT on an image i need to divide the image into 8*8blocks.
> blkproc is the command which only functions on the blocks which are generated.Is there any other command in matlab which allows formation of blocks .
> Else how can we write a nested for-loop to select the blocks so that it iterates 8 times and then stops and continues from the ninth time.
> Thanks in advance

I don't understand what you are trying to do. What BLKPROC does is:

1) divide an input image into [M x N] blocks
2) run the user supplied function on each block
3) assemble all the results into a single output image and return

What do you mean by "formation" of blocks? Why do you want to "iterate 8 times and then stop and continue" ? Can you explain more clearly what problem you are trying to solve?
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