Given a image with a rectangular flash light, I want to be able to detect the <https://www.google.ca/search?hl=en&tbo=d&biw=1444&bih=785&noj=1&tbm=isch&sa=1&q=flash+light&oq=flash+light&gs_l=img.3..0l2j0i10j0l2j0i10l2j0j0i10j0.3220.4601.0.4724.11.11.0.0.0.0.115.582.9j2.11.0...0.0...1c.1.2.img.KW-TxpHJUQY#imgrc=ItqQWdUzB61hHM%3A%3BDVcQpi6VwlrwPM%3Bhttp%253A%252F%252Fel-top.com%252Fsites%252Fdefault%252Ffiles%252Fflashlight-nitecore-sens-mini.jpg%3Bhttp%253A%252F%252Fel-top.com%252Fproduct%252Fpocket-outdoor-led-flashlight-nitecore-sens-mini-170lm%3B1200%3B1200) 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!

how to detect rectangles in image

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harrah 2013 年 2 月 4 日

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!

Muzafar Pandit 2013 年 2 月 4 日

I think you can use Hough transform for the said purpose

Image Analyst 2013 年 2 月 4 日

Perhaps corner(), hough(), houghlines(), or else do a web search for "CBIR".

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