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

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Lior
Lior 2012-4-3
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 2012-4-3
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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回答（1 个）

Sukuchha
Sukuchha 2012-4-3
use blockproc

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