Deformable pedal curves with application to face contour extraction

Authors:
Fuzhen Huang;Jianbo Su
Affiliations:
Institute of Automation & Research Center of Intelligent Robotics, Shanghai Jiaotong University, Shanghai, China;Institute of Automation & Research Center of Intelligent Robotics, Shanghai Jiaotong University, Shanghai, China
Venue:
CVPR'03 Proceedings of the 2003 IEEE computer society conference on Computer vision and pattern recognition
Year:
2003

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Abstract

Pedal curves are the loci of the feet of perpendiculars to the tangents of a fixed curve to a fixed point called the pedal point. By varying the location of the pedal point, deformable pedal curves have an important feature of incorporating a global parameterized shape into the curve evolution framework. In this paper, a hybrid geometric active model based on deformable pedal curves for face contour extraction is presented. Taking advantage of the deformable pedal curves, the proposed model can allow for representation of global and local shape characteristic of human face. Moreover, by implementing the model in a level set framework, automatic topological changes can be achieved naturally. Experimental results show the validity of our approach.