Computer Vision Demonstration Website

Electronics and Computer Science
University of Southampton

Hough Transform for Circles

The Hough Transform is a method for finding shapes in an image. The Circle Hough has been implemented here, which is used to find circles within an image.

How it works

The circular hough transform is almost identical to the hough transform for lines, but uses the parametric form for a circle:

Code

Image processing classes:

• circleHough.java
• sobel.java
• hystThresh.java

Demo framework:

• houghDemo.java

The pages were designed and developed for educational purposes only, to demonstrate how computer vision techniques work. They are designed for no other purpose and neither the authors nor their institutions accept any liability concerning use of these pages.

Links

Mark Nixon & Alberto Aguado, 2002, Feature Extraction & Image Processing, Newnes

ECS | Feature Extraction & Image Processing | © 2005 University of Southampton