how to detect rectangles in image

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harrah
harrah am 4 Feb. 2013
Given a image with a rectangular flash light, I want to be able to detect the flash light
I'm trying to find a way to detect rectangle, but I'm lost.
If somebody can give me brief step-by-step pointers or advice as to how to approach this problem, it's be appreciated.
Thx in advance!
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Muzafar Pandit
Muzafar Pandit am 4 Feb. 2013
I think you can use Hough transform for the said purpose

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Image Analyst
Image Analyst am 4 Feb. 2013
Perhaps corner(), hough(), houghlines(), or else do a web search for "CBIR".

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