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Figure retrieving method

A graphics and image technology, applied in image analysis, image data processing, special data processing applications, etc., can solve problems such as the establishment of a 3D model library, the user cannot express the retrieval requirements in the retrieval interface, and the difficulty of the search engine, so as to ensure real-time and Accuracy, wide range of representation methods

Inactive Publication Date: 2010-06-02
SUN YAT SEN UNIV
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AI Technical Summary

Problems solved by technology

However, how to quickly search for the model you are interested in in the massive 3D model library, and building a search engine for the 3D model library is a difficult problem
The graphic retrieval method in the prior art is to classify and retrieve the 3D model according to the geometric content, and the user cannot conveniently express the retrieval requirements through the retrieval interface

Method used

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  • Figure retrieving method
  • Figure retrieving method
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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] The method of the present invention mainly studies the multi-modal retrieval of graphics, and its principle is to calculate the similarity between the graphics input by the user or the graphics and the three-dimensional graphics through information such as two-dimensional images, two-dimensional graphics, and three-dimensional models according to the characteristics of three-dimensional graphics , so as to realize the multi-modal retrieval of 3D graphics. Mu...

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Abstract

The invention discloses a figure retrieving method, comprising the steps of: (1) modeling a polygon; establishing a three-dimensional grid model base; (2) matching three-dimensional grid models with two-dimensional images or figures; (3) extracting frameworks of the three-dimensional grid models; (4) retrieving the three-dimensional models according to the frameworks; (5) extracting characteristic points of the three-dimensional grid models; (6) computing control points of the three-dimensional grid models; (7) computing frequency spectra of the control points of the three-dimensional grid models; and (8) computing the similarity of the frequency spectra and retrieving a corresponding figure according to the similarity. The technical scheme is more convenient for retrieval and supports multimode retrieval.

Description

technical field [0001] The invention relates to the technical field of graphic processing, in particular to a graphic retrieval method. Background technique [0002] The network and computer graphics have gradually penetrated into daily life, and people are no longer satisfied with only seeing two-dimensional images on the Internet. On the other hand, with the increasing maturity of 3D modeling technology and the rapid development of computer software and hardware technology, the number of 3D models has increased dramatically in the last ten years. Compared with two-dimensional images, people can browse their interested parts from any angle, so they are more popular and widely used. The media of 3D graphics cannot be lacked in the research of hot fields such as online game and animation technology, network education technology, key technologies and products of Web-based information services, and database and data mining technology. [0003] Making full use of existing 3D m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06T7/00G06K9/68
Inventor 许晓伟罗笑南王召福
Owner SUN YAT SEN UNIV
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