Circular Object Detection Using a Modified Hough Transform

Authors:
Marcin Smereka;Ignacy Dulęba
Affiliations:
Institute of Computer Engineering, Control and Robotics, Wrocław University of Technology, ul. Janiszewskiego 11/17 50--372 Wrocław, Poland;Institute of Computer Engineering, Control and Robotics, Wrocław University of Technology, ul. Janiszewskiego 11/17 50--372 Wrocław, Poland
Venue:
International Journal of Applied Mathematics and Computer Science - Applied Image Processing
Year:
2008

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Abstract

A practical modification of the Hough transform is proposed that improves the detection of low-contrast circular objects. The original circular Hough transform and its numerous modifications are discussed and compared in order to improve both the efficiency and computational complexity of the algorithm. Medical images are selected to verify the algorithm. In particular, the algorithm is applied to localize cell nuclei of cytological smears visualized using a phase contrast microscope.