How do I take a hough transform in image processing?

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Alexander N. Zemliachenko

You can use Image Processing Toolbox in MATLAB

Gleb Liseykin

OpenCV is also a great tool, you can find Hough transform theory and samples here:

http://docs.opencv.org/doc/tutorials/imgproc/imgtrans/hough_lines/hough_lines.html

Sampath Kumar

There are toolboxes available in matlab file exchange

Ex: http://in.mathworks.com/matlabcentral/fileexchange/26978-hough-transform-for-circles