Automatic extraction method and apparatus for feature points of three-dimensional tooth grid models

A grid model and automatic extraction technology, applied in the field of oral cavity, can solve the problem of low efficiency of feature points of 3D tooth grid model, and achieve high efficiency.

Active Publication Date: 2018-09-04
北京正齐口腔医疗技术有限公司
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Problems solved by technology

[0004] In view of this, the method and device for automatically extracting feature points of a three-dimensional tooth mesh model provided by the present invention are aimed at solving the problem of low efficiency of manual extraction of feature points of a three-dimensional tooth mesh model in the prior art

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  • Automatic extraction method and apparatus for feature points of three-dimensional tooth grid models
  • Automatic extraction method and apparatus for feature points of three-dimensional tooth grid models
  • Automatic extraction method and apparatus for feature points of three-dimensional tooth grid models

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[0031] Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be more thoroughly understood, and the scope of the present application can be fully conveyed to those skilled in the art.

[0032] The embodiment of the present invention provides a method for automatically extracting feature points of a three-dimensional tooth mesh model, such as figure 1 As shown, the method includes:

[0033] 101. Determine the coordinates of each feature point in the training set in the corresponding three-dimensional tooth mesh model.

[0034] Wherein, the training set includes at least one set of related data o...

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Abstract

The invention discloses an automatic extraction method and apparatus for feature points of three-dimensional tooth grid models, which relates to the technical field of oral cavity, and can solve the problem of low efficiency of manually extracting the feature points of the three-dimensional tooth grid models in the prior art. The method comprises the steps of determining coordinates, in the corresponding three-dimensional tooth grid models, of the feature points in a training set; performing statistics on the coordinates of the same feature points of the same teeth, thereby determining position ranges of the feature points in the target three-dimensional tooth grid model; by utilizing the first model, determining the specific positions of the feature points in the target three-dimensionaltooth grid model from the position ranges; and when at least two specific positions of one feature point determined by utilizing the first model exist, determining the unique position of the one feature point from the at least two specific positions. The automatic extraction method and apparatus is mainly suitable for a scene of automatically extracting the feature points for the three-dimensionaltooth grid models.

Description

technical field [0001] The invention relates to the field of dental technology, in particular to a method and device for automatically extracting feature points of a three-dimensional tooth mesh model. Background technique [0002] With the development of digital medicine, the field of dentistry has also gradually entered digitalization. When the patient's appearance is affected by irregular teeth, the doctor can use digital oral technology to provide a reasonable virtual tooth arrangement plan, and then use the tooth arrangement plan to make an orthodontic appliance for orthodontics. [0003] In the process of tooth arrangement and other operations, it is often necessary to extract the feature points used for tooth arrangement and other operations in the 3D tooth mesh model, and then perform tooth arrangement and other operations based on these feature points. Among them, in the field of feature point extraction of the 3D tooth mesh model, the manual extraction method is m...

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Application Information

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IPC IPC(8): G06K9/46G06K9/62G16H50/50
CPCG16H50/50G06V10/507G06F18/214
Inventor 陈莉唐人杰
Owner 北京正齐口腔医疗技术有限公司
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