| Presentation | 2011-05-20 Median of Polygonal Curves and its Applications to Computational Anatomy Keiko MORITA, Atsushi IMIYA, Tomoya SAKAI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we develop an algorithm for the computation of the median shape of a collection of 2D organ images. The 2D organ image is the boundary curve of a 2D sliced organ of volumetric CT image. We approximate organ shape as a simple polygonal curve using two types of shape descriptors, phase and turning functions of boundary contour. These shape descriptors allow us to achieve linear invariant shape matching. Shape matching derives a distance matrix for the collection of the boundary contours of 2D organs. Using this distance matrix, we define the median of shapes. Furthermore, we show that using hierarchical clustering method to our matching measure, we can discriminate abnormal shapes in the collection of 2D organs. This pattern rejection property of the algorithm leads to the conclusion that we can use our method as a support system for comparative image interpretation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | phase function / turning function / linear invariant shape matching / distance matrix / hierarchical clustering |
| Paper # | IE2011-38,PRMU2011-30,MI2011-30 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2011/5/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Median of Polygonal Curves and its Applications to Computational Anatomy |
| Sub Title (in English) | |
| Keyword(1) | phase function |
| Keyword(2) | turning function |
| Keyword(3) | linear invariant shape matching |
| Keyword(4) | distance matrix |
| Keyword(5) | hierarchical clustering |
| 1st Author's Name | Keiko MORITA |
| 1st Author's Affiliation | Graduate School of Advanced Integration Science, Chiba University() |
| 2nd Author's Name | Atsushi IMIYA |
| 2nd Author's Affiliation | Institute of Media and Information Technology, Chiba University |
| 3rd Author's Name | Tomoya SAKAI |
| 3rd Author's Affiliation | Faculty of Engineering, Nagasaki University |
| Date | 2011-05-20 |
| Paper # | IE2011-38,PRMU2011-30,MI2011-30 |
| Volume (vol) | vol.111 |
| Number (no) | 48 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |