Automatic segmentation method of tooth three-dimensional network 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: 2018-08-03
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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  • Automatic segmentation method of tooth three-dimensional network model
  • Automatic segmentation method of tooth three-dimensional network model
  • Automatic segmentation method of tooth three-dimensional network 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 provides an automatic segmentation method of a tooth three-dimensional network model. The method comprises four special functions and the steps of: automatic curvature thresholdselection operation, feature area skeletonizing operation, closing of feature area gaps by employing a distance field constraint method, and distribution of different colors for segmented disjoint sets. The algorithm comprises the steps of: initial feature area extraction, morphology operation, removal of redundant branches in the initial segmentation, closing of gaps in the feature skeleton, andprocessing of excessive segmentation. The automatic segmentation method of a tooth three-dimensional network model is high in degree of automation and only needs to input the quantity of teeth to completely segment each tooth in a tooth model so as to greatly relieve the medical workers' working pressure.

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 Applications(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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