Asked by mahesh chathuranga
on 20 Sep 2013

my image is gray scale image of 100*120. my programme is

*fun=@(x) x.*2; B = blkproc(I,[4 4],[1 1],fun);*

when i'm looking for 1st sub block it gives only a single number, it equals to the twice of (1,1) pixel value of original image. can't i get the twice of 1st 4*4 block.is it possible or not.

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Answer by Image Analyst
on 20 Sep 2013

Accepted answer

It gives a single number but you can multiply by ones(blockSize) to expand it. See the attached demos scripts.

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mahesh chathuranga
on 25 Sep 2013

It gives the error message ??? Undefined function or method 'blockproc' for input arguments of type 'function_handle'.

Error in ==> Untitled at 44 blockyImage8 = blockproc(single(grayImage), blockSize, medianFilterFunction);

Image Analyst
on 25 Sep 2013

mahesh chathuranga
on 25 Sep 2013

I,m working with R2009a,it uses blkproc. but is there any method in matlab to find the old codes.

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