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Sketch-based 3D Model Retrieval using Keyshapes for Global and Local Representation

Saavedra, J. M. and Bustos, Benjamin and Schreck, Tobias and Yoon, Sang Min and Scherer, Maximilian (2012):
Sketch-based 3D Model Retrieval using Keyshapes for Global and Local Representation.
In: Eurographics Workshop and Symposia Proceedings Series, pp. 47-50, Eurographics Association, Goslar, Eurographics 2012 Workshop on 3D Object Retrieval, DOI: 10.2312/3DOR/3DOR12/047-050,
[Conference or Workshop Item]

Abstract

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.

Item Type: Conference or Workshop Item
Erschienen: 2012
Creators: Saavedra, J. M. and Bustos, Benjamin and Schreck, Tobias and Yoon, Sang Min and Scherer, Maximilian
Title: Sketch-based 3D Model Retrieval using Keyshapes for Global and Local Representation
Language: English
Abstract:

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.

Series Name: Eurographics Workshop and Symposia Proceedings Series
Publisher: Eurographics Association, Goslar
Uncontrolled Keywords: Forschungsgruppe Visual Search and Analysis (VISA), 3D Object retrieval, Sketch based queries
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Interactive Graphics Systems
Event Title: Eurographics 2012 Workshop on 3D Object Retrieval
Date Deposited: 12 Nov 2018 11:16
DOI: 10.2312/3DOR/3DOR12/047-050
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