Tuesday, 15 November 2011

Hough Transform

This is used for finding straight lines in an image.  Instead of using Cartesian coordinates it uses polar coordinates to find straight lines on the image.


The Hough Transform can only be executed after the edge detector has been implemented.
Code by Edinburgh university was adapted for the relevant implementation.
http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm

http://homepages.inf.ed.ac.uk/rbf/HIPR2/flatjavasrc/Hough.java


In the first tests, the Hough lines were drawn incorrectly.  This could be due to the Hough matrix being wrong or the drawing of the Hough lines is wrong.

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