Indexing and retrieval of 3D models by unsupervised clustering with hierarchical SOM

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

13 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationProceedings - International Conference on Pattern Recognition
Pages613-616
Volume4
Publication statusPublished - 2004

Publication series

Name
Volume4
ISSN (Print)1051-4651

Conference

TitleProceedings of the 17th International Conference on Pattern Recognition, ICPR 2004
PlaceUnited Kingdom
CityCambridge
Period23 - 26 August 2004

Abstract

A hierarchical indexing structure for 3D model retrieval based on the Hierarchical Self Organizing Map (HSOM) is proposed. The proposed approach organizes the database into a hierarchy so that head models are partitioned by coarse features initially and finer scale features are used in lower levels. The aim is to traverse a small subset of the database during retrieval. This is made possible by exploiting the multi-resolution capability of spherical wavelet features to successively approximate the salient characteristics of the head models, which are encoded in the form of weight vectors associated with the nodes at different levels (from coarse to fine) of the HSOM. To avoid premature commitment to a possibly erroneous model class, search is propagated from a subset of nodes at each level, which is selected based on a fuzzy membership measure between the query feature vector and weight vector, instead of taking the winner-take-all approach. Experiments show that, in addition to efficiency improvement, model retrieval based on the HSOM approach is able to achieve a much higher accuracy compared with the case where no indexing is performed.

Citation Format(s)

Indexing and retrieval of 3D models by unsupervised clustering with hierarchical SOM. / Wong, H. S.; Cheung, K. K T; Sha, Y. et al.
Proceedings - International Conference on Pattern Recognition. Vol. 4 2004. p. 613-616.

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review