Abstract
Belongie et al. used sets of shape contexts for contours at certain landmarks and showed that they offer good results in shape matching. We propose a better selection of landmark points based on a low-pass filtering of the shape contour and consider that shape context at landmarks along the contour form a cyclic sequence. These cyclic sequences can be properly compared by means of Cyclic Dynamic Time Warping, as shown in the paper. Experiments on the MPEG7 CE-Shape-1 and the SQUID Demo databases show that our proposal outperforms the WARP system and Belongie’s approach for shape retrieval.
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Palazón, V., Marzal, A. (2006). Shape Retrieval Using Shape Contexts and Cyclic Dynamic Time Warping. In: Campilho, A., Kamel, M.S. (eds) Image Analysis and Recognition. ICIAR 2006. Lecture Notes in Computer Science, vol 4141. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11867586_58
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DOI: https://doi.org/10.1007/11867586_58
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