How to use Canny edge detector as a local edge detector?

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I mean , i have this big matrix which i want to split to small part and for each part to find it's edges using Canny and in the end to return it to it's original size.
how can i do that?
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Image Analyst
Image Analyst on 3 Apr 2012
Why do you want to do that? Aren't all edges local already anyway? Do you expect any difference, except maybe for some boundary artifacts on the smaller subimage method?

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Answers (1)

Sukuchha
Sukuchha on 3 Apr 2012
use blockproc

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