Teeth modeling method based on three-dimensional model retrieval

A modeling method and 3D model technology, applied in the field of image processing, can solve problems such as internal structure information is not understood

Active Publication Date: 2017-03-15
四川乃康科技有限公司
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AI Technical Summary

Problems solved by technology

Xu Mingzhi and others used 3D laser scanning to build tooth models. Although 3D laser scanners can automatically locate the scanned point data at different angles accurately, the scanning can only obtain the surface data of the model, and they do not know the information about the i

Method used

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  • Teeth modeling method based on three-dimensional model retrieval
  • Teeth modeling method based on three-dimensional model retrieval
  • Teeth modeling method based on three-dimensional model retrieval

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Embodiment Construction

[0077] Such as figure 1 As shown, the specific modeling steps of the present invention are as follows:

[0078] Step (1) Establish a tooth model library.

[0079] When building a tooth model library, it is necessary to segment the crown of each permanent tooth, so as to facilitate the extraction of feature values ​​in different areas, and such feature value extraction is more accurate. When performing regional segmentation on the crown, by analyzing the differences in the characteristics of different types of permanent tooth crowns, the surface features of the two types of curvature, Gaussian curvature and average curvature, are used to segment the crown surface. According to the differences in the characteristics of different types of permanent tooth crowns and the surface features of the crowns described by the segmented regions, the types of crowns were identified.

[0080] The region segmentation of the crown in step (1) is based on the concave-convexity and morphologica...

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Abstract

The invention discloses a tooth modeling method based on three-dimensional model retrieval. According to the method, three-dimensional retrieval technology is utilized for searching a teeth model with a dental crown which is similar with a to-be-modeled dental crown, and modeling is finished through three-point translation conversion registration, cutting and splicing. For reducing a workload in retrieval, the invention provides a teeth type identification method based on area segmentation, wherein area segmentation is performed through analyzing dental crown characteristic differences of different types of permanent teeth. Dental crown type identification and classification are realized according to a curved surface characteristic of the dental crown, thereby performing retrieval on different types of dental crowns. The teeth modeling method has advantages of simple operation and high modeling effect.

Description

technical field [0001] The invention belongs to the field of image processing and relates to an application of three-dimensional model retrieval in tooth modeling. Background technique [0002] With the continuous development of science and technology, computer graphics and image processing technology has been widely used. The cross-integration and mutual penetration of computer technology and orthodontics makes the computer-aided orthodontic system emerge as the times require. [0003] Computer-aided orthodontics system is to use computer graphics, graphic image processing and analysis technology to carry out computer-aided design, manufacture and analysis of orthodontics, so that doctors can more intuitively observe tooth deformity and tooth occlusal relationship, through human The teeth are operated in a computer-interactive way, which makes the measurement and analysis of some complex feature quantities easier. [0004] Influenced by the visualization of human body dat...

Claims

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Application Information

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IPC IPC(8): G06T17/30
CPCG06T17/30
Inventor 李洪安李占利武璠菲高天宇
Owner 四川乃康科技有限公司
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