3d model retrieval method and system

A three-dimensional shape and three-dimensional technology, which is applied in the field of retrieving three-dimensional shape models, can solve the problems of incorrect comparison and huge amount of calculation
CN101446952AInactive Publication Date: 2009-06-03HITACHI LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2009-06-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention provides a 3D model retrieval system designed to extract feature vectors of 3D models to retrieve a similar model. Image feature vectors are extracted by subjecting target 3D models to rendering from various directions by using a random rotation generator and a 2D image generator. Then, the image feature vectors are registered in an image feature vectors database. Image feature vectors are extracted by subjecting a query 3D model to rendering from various directions by using another random rotation generator and another 2D image generator. The image feature vectors are compared to the contents of the image feature vectors database, thereby retrieving a 3D model.
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Description

technical field

[0001] The invention relates to a method and device for retrieving a three-dimensional shape model (3D model). Background technique

[0002] In recent years, with the advancement of computers and networks, three-dimensional shape models have been used in various situations. On the one hand, the amount of data is increasing, and on the other hand, the demand for effective management of three-dimensional shape model data and efficient retrieval of desired shapes by users is increasing. For this reason, various methods have been proposed regarding the retrieval method of the three-dimensional shape model. As a method for retrieving a three-dimensional shape model, a method for searching by generating a two-dimensional image (2D image) from the three-dimensional shape and obtaining feature values ​​from the two-dimensional image has been proposed.

[0003] Patent Document 1: Japanese Patent Laid-Open No. 2006-277166

[0004] Patent Document 2: Japanese Patent ...

Claims

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