Sketch-based 3D model retrieval using keyshapes for global and local representation

J. M. Saavedra, B. Bustos, T. Schreck, S. Yoon, M. Scherer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

33 Scopus citations


Since 3D models are becoming more popular, the need for effective methods capable of retrieving 3D models is becoming crucial. Current methods require an example 3D model as query. However, in many cases, such a query is not easy to get. An alternative is using a hand-drawn sketch as query. In this work, we present a new keyshape based approach named HKO-KASD for retrieving 3D models using rough sketches as queries. Our approach comprises two general steps. First, a global descriptor is used to determine the appropriate viewpoint for each model. Second, we apply a local matching process to determine the final ranking for an input sketch. To this end, we present a local descriptor capable of working with sketch representations. The global descriptors as well as the local descriptors rely on a set of keyshapes precomputed from 2D representations of 3D models and from the query sketch as well. We evaluate our method using the first-tier precision and compare it with current approaches (HELO, STELA). Our results show a significant increase in precision for many classes of 3D models.

Original languageEnglish
Title of host publicationEG 3DOR 2012 - Eurographics 2012 Workshop on 3D Object Retrieval
Number of pages4
StatePublished - 2012
Externally publishedYes
Event5th Eurographics Workshop on 3D Object Retrieval, EG 3DOR 2012 - Cagliari, Italy
Duration: 13 May 201213 May 2012

Publication series

NameEurographics Workshop on 3D Object Retrieval, EG 3DOR
ISSN (Print)1997-0463
ISSN (Electronic)1997-0471


Conference5th Eurographics Workshop on 3D Object Retrieval, EG 3DOR 2012

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