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Proceedings Paper

MPEG-7 based shape retrieval with robustness against partial occlusion
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Paper Abstract

Object shape features are powerful when used in similarity search-&-retrieval and object recognition because object shape is usually strongly linked to object functionality and identity. Many applications, including those concerned with visual objects retrieval or indexing, are likely to use shape features. Those systems have to cope with scaling, rotation, deformation and partial occlusion of the objects to be described. The ISO standard MPEG-7 contains different shape descriptors, where we focus especially on the region-shape descriptor. Since we found, that the region-shape descriptor is not very robust against partial occlusion, we propose a slightly changed feature extraction method, which is based on central-moments. Further, we compare our method with the original region-shape implementation and show that, applying the proposed changes, the robustness of the region-shape descriptor against partial occlusions can be significantly increased.

Paper Details

Date Published: 10 January 2003
PDF: 9 pages
Proc. SPIE 5021, Storage and Retrieval for Media Databases 2003, (10 January 2003); doi: 10.1117/12.476249
Show Author Affiliations
Michael Hoeynck, RWTH Aachen (Germany)
Jens-Rainer Ohm, RWTH Aachen (Germany)

Published in SPIE Proceedings Vol. 5021:
Storage and Retrieval for Media Databases 2003
Minerva M. Yeung; Rainer W. Lienhart; Chung-Sheng Li, Editor(s)

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