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Portal image feature extraction by hierarchical region processing technique

Publication ,  Journal Article
Chen, CW; Lai, W; Yin, FF; Chen, L
Published in: Proceedings of the IEEE International Conference on Systems, Man and Cybernetics
December 1, 1995

We describe in this paper a novel hierarchical region processing technique for the extraction of features from portal images. Feature extraction is an essential component in the computerized registration of portal images for radiation treatment verification and patient setup error minimization. Unlike the existing methods with global processing techniques, the proposed technique is able to extract features at different levels through forming a pyramid of regions-of-interest. Such pyramid is formed according to the inherent hierarchy of portal image features which are often evident only at corresponding levels. A sequence of operating steps, including histogram manipulation, Hough transform, optimal Canny edge detection, and pyramid feature merging, are employed to accomplish the processing at different levels of the regions-of-interest. With such processing hierarchy, we are able to overcome the difficulties encountered by the existing global processing-based techniques and produce accurate field edges and sufficient and meaningful anatomical landmarks for the subsequent feature matching and error correction procedures.

Duke Scholars

Published In

Proceedings of the IEEE International Conference on Systems, Man and Cybernetics

ISSN

0884-3627

Publication Date

December 1, 1995

Volume

4

Start / End Page

3561 / 3566
 

Citation

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MLA
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Chen, C. W., Lai, W., Yin, F. F., & Chen, L. (1995). Portal image feature extraction by hierarchical region processing technique. Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, 4, 3561–3566.
Chen, C. W., W. Lai, F. F. Yin, and L. Chen. “Portal image feature extraction by hierarchical region processing technique.” Proceedings of the IEEE International Conference on Systems, Man and Cybernetics 4 (December 1, 1995): 3561–66.
Chen CW, Lai W, Yin FF, Chen L. Portal image feature extraction by hierarchical region processing technique. Proceedings of the IEEE International Conference on Systems, Man and Cybernetics. 1995 Dec 1;4:3561–6.
Chen, C. W., et al. “Portal image feature extraction by hierarchical region processing technique.” Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, vol. 4, Dec. 1995, pp. 3561–66.
Chen CW, Lai W, Yin FF, Chen L. Portal image feature extraction by hierarchical region processing technique. Proceedings of the IEEE International Conference on Systems, Man and Cybernetics. 1995 Dec 1;4:3561–3566.

Published In

Proceedings of the IEEE International Conference on Systems, Man and Cybernetics

ISSN

0884-3627

Publication Date

December 1, 1995

Volume

4

Start / End Page

3561 / 3566