Could anyone explain how to detect various polygon shaped features from an image using Hough Transform?

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Sachin Seth

Thank you for replying. I am currently using Matlab . So, can you tell me how to do it in Matlab.

Volkmar Wieser

Hi,

I'm also not sure if this functions are available in Matlab but there exists a mexopencv framework which includes the functions you need:

https://github.com/kyamagu/mexopencv

https://github.com/kyamagu/mexopencv/blob/master/src/%2Bcv/findContours.cpp

https://github.com/kyamagu/mexopencv/blob/master/src/%2Bcv/approxPolyDP.cpp

Good Luck!

Abin Jose

You could try to approximate the polygons with its bounding circles and once you find the bounding circles, you will be able to find them using hough analysis. This is because circle is also a polygon with n infinite number of corners.