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Boundary extraction using supervised edgelet classification

Opt. Eng. 51, 017002 (Feb 06, 2012); http://dx.doi.org/10.1117/1.OE.51.1.017002

Ji Zhao, Jiayi Ma, Jinwen Tian, and Jie Ma

Huazhong University of Science and Technology, Institute for Pattern Recognition and Artificial Intelligence, Wuhan 430074, China

Sheng Zheng

China Three Gorges University, Institute of Intelligent Vision and Image Information, College of Science, Yichang 443002, Hubei, China

Traditional learning-based boundary extraction algorithms classify each pixel edge separately and then get boundaries from the local decisions of a classifier. However, we propose a supervised learning method for boundary extraction by using edgelets as boundary elements. First, we extract edgelets by clustering probabilities of boundary. Second, we use features of edgelets to train a classifier that determines whether an edgelet belongs to a boundary. The classifier is trained by utilizing edgelet features, including local appearance, multiscale features, and global scene features such as saliency maps. Finally, we use the classifier to decide the probability that the edgelet belongs to the boundary. The experimental results in the Berkeley Segmentation Dataset demonstrate that our algorithm can improve the performance of boundary extraction.

© 2012 Society of Photo-Optical Instrumentation Engineers

History
Received Aug 23, 2011
Accepted Nov 11, 2011
Revised Oct 31, 2011
Published online Feb 06, 2012
Citation
Ji Zhao, Jiayi Ma, Jinwen Tian, Jie Ma and Sheng Zheng, "Boundary extraction using supervised edgelet classification", Opt. Eng. 51, 017002 (Feb 06, 2012); http://dx.doi.org/10.1117/1.OE.51.1.017002

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