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An Automatic Segmentation Method of Three-dimensional Teeth Mesh Model

A technology of automatic segmentation and three-dimensional grid, applied in image data processing, instruments, etc., can solve problems such as many human-computer interactions and cumbersome operation process, achieve a high degree of automation and reduce work pressure.

Active Publication Date: 2021-08-27
成都格登特科技有限公司
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Problems solved by technology

[0005] In order to solve the problems described in the background technology, the present invention provides an automatic segmentation method for a three-dimensional mesh model of teeth, which is aimed at the problems of many human-computer interactions and cumbersome operation processes in the currently commonly used tooth segmentation methods

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  • An Automatic Segmentation Method of Three-dimensional Teeth Mesh Model
  • An Automatic Segmentation Method of Three-dimensional Teeth Mesh Model
  • An Automatic Segmentation Method of Three-dimensional Teeth Mesh Model

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Embodiment Construction

[0035] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] A method for automatic segmentation of a tooth three-dimensional mesh model, comprising the steps of:

[0037] Step 1. Import the tooth 3D model data into the system memory for visual display;

[0038] Step 2. Detect the information of each vertex in the tooth model, including: the normal vector of the triangular surface, the normal vector of the triangular mesh vertex, and the curvature of the triangular mesh vertex and the surface, and set an initial curvature threshold;

[0039] Step 3. According to the curvature threshold, uniformly mark the regions that meet the requirements in the tooth model to obtain the characteristic regions;

[0040] Step 4, repairing the characteristic region obtained in step 3 through morphological operations;

[0041] Step 5, refine the feature area through the skeletonization operation on t...

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Abstract

The present invention proposes an automatic segmentation method for a tooth three-dimensional mesh model, including automatic curvature threshold selection operation, feature region skeletonization operation, using distance field constraint method to close gaps in feature regions, and distributing the segmented disjoint sets to different Four characteristic functions of color. The algorithm includes: initial feature area extraction, morphological operations, removal of redundant branches in the initial segmentation, closing gaps in the feature skeleton, and over-segmentation processing. Using the segmentation algorithm of the present invention has a high degree of automation, and each tooth in the tooth model can be completely segmented only by inputting the number of teeth, which greatly reduces the work pressure of medical workers.

Description

technical field [0001] The invention relates to the technical field of tooth model digitization, in particular to an automatic segmentation method of a tooth three-dimensional mesh model. Background technique [0002] With the improvement of people's aesthetic concept and the pursuit of a perfect appearance, more and more people start plastic surgery and cosmetic surgery, and dental malocclusion not only affects self-confidence, but also hinders social interaction and work. The main purpose of orthodontics is to arrange the teeth in order, establish a good occlusal function, beautify the appearance, and finally enable the patient to have a pair of healthy, orderly and white teeth. Currently, orthodontics is considered an essential and important part of oral health care. [0003] In traditional orthodontic treatment, the treatment equipment needs to be adjusted repeatedly to achieve the goal of correct tooth correction, and patients cannot take and wear it by themselves, whi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T19/20
CPCG06T19/20
Inventor 赵骥吴晓翎王浥丞
Owner 成都格登特科技有限公司
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