How to find rectangle of difference between two images

Posted by Simon Brown on Stack Overflow See other posts from Stack Overflow or by Simon Brown
Published on 2010-04-24T14:06:45Z Indexed on 2010/04/24 14:13 UTC
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Filed under:

.NET

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c#

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image

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comparison

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algorithm

I have two images the same size. What is the best way to find the rectangle in which they differ. Obviously I could go through the image 4 times in different directions, but i'm wondering if there's an easier way.

Example:

first image

second image

difference

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