move a 3*3 window on a binary image

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atefeh gh
atefeh gh on 3 Sep 2014
Commented: Image Analyst on 5 Sep 2014
hi I have a 3*3 window and a binary image..I want to move this window on this image... how can do this? thanks

Answers (2)

Image Analyst
Image Analyst on 3 Sep 2014
Try imfilter(), conv2(), or nlfilter(), or possibly blockproc(). That's about all I can say until you provide more information.
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atefeh gh
atefeh gh on 5 Sep 2014
so is there any Differences between what you say and this:
t1=1/9*[1 1 1;1 1 1;1 1 1];
t2=imfilter(binaryimage,t1);
like that Joseph said...am I right or not?
thanks Image Analyst
Image Analyst
Image Analyst on 5 Sep 2014
I think that should be the same. Sometimes there are weird things about keeping classes the same so you'd need to check that. For example t2 mgiht be uint8 instead of double and thus not show fractional numbers but just round to 0 and 1. If that happens, just cast to double before sending in to imfilter.

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atefeh gh
atefeh gh on 3 Sep 2014
thanks David and Image Analyst I think I can do this by blockproc...I saw in help this: B = blockproc(A,[M N],FUN)
I want to explain the work that I want to do: I should apply 3*3 window based on this: if pexels located on two oposite sides of window have similar logical values(e.g,zero) all pixels covered by this window will be converted to that logical value(e.g,zero)
I want to know Is there any function can halep me to apply my work?? I hope I could explain my work to you.. Thanks in advance

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