Enhanced 3D Model Retrieval System through Characteristic Views Descriptor
Date Issued
2004
Date
2004
Author(s)
Guan, Shuen-Huei
DOI
en-US
Abstract
With the distinct evolution in computer graphics, more 3D applications are developed, including modeling tools, rendering software and authoring applications. Those applications were ever designed for professionals, but now even the crowd can take advantage of them to do something favorably such that people start to demand more and more 3D models just like they search in Google for everyday information, homework and others. Through nice and easy-to-use modeling tools and more people get involved in creating 3D models, a large number of 3D models are available on Internet. The techniques for 3D model retrieval then become necessary. Much research of 3D model retrieval techniques has been proposed recently and the system based on LightField Descriptors by Chen et al. have been proven as the most effective system in retrieval accuracy until now except its high on-line computing cost compared to other techniques. In this thesis, an enhanced 3D model retrieval system based on Characteristic Views Descriptor is proposed to speed up on-line computation and achieve the retrieval accuracy of the system by Chen et al. To the former, instead of one hundred orthogonal projections of a 3D model, six projections as Characteristic Views are required to perform matching between 3D models, which eminently boost on-line matching speed about 50 to 100 times faster. To the latter, except the original image metrics, distinctive Generic Fourier Descriptor on range data is employed to recover the accurate loss caused by fewer projections. And the system achieves nearly the same retrieval accuracy as Chen et al.’s system. Moreover, a brand new idea for pose estimation by Orthogonal Visual Hull is also proposed. We conclude that the new system overmatches Chen et al.’s system in time, space and retrieval accuracy and thus the contribution of this thesis is to provide a more practical 3D model retrieval system to the public.
Subjects
視覺相似
三維模型比對
形狀比對
三維模型辨識
三維物件描述詞
特徵面
shape descriptor
characteristic views
3D recognition
visual similarity
3D model retrieval
shape matching
information retrieval
Type
thesis
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