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Dental caries image processing method based on extracted tooth CBCT

A technology of image processing and isolated teeth, applied in the field of image processing, can solve problems such as caries detection without isolated teeth, and achieve the effect of improving accuracy

Inactive Publication Date: 2015-04-29
BEIJING JIAOTONG UNIV
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Problems solved by technology

Currently, there is no research method for caries detection in isolated teeth using oral CBCT images

Method used

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  • Dental caries image processing method based on extracted tooth CBCT
  • Dental caries image processing method based on extracted tooth CBCT
  • Dental caries image processing method based on extracted tooth CBCT

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[0031] Below in conjunction with accompanying drawing and example the present invention will be further described

[0032] The present invention proposes a caries detection method based on CBCT images of isolated teeth, using clinically photographed CBCT images of teeth, and obtaining caries existing in the CBCT images through the detection method, and realizing the detection and positioning of caries in CBCT images for Improving the accuracy of caries diagnosis in CBCT images.

[0033] The dental caries image processing method of the present invention first filters out the particle noise in the original tooth CBCT image through a Gaussian smoothing filter, and maintains the tooth edge features well, and obtains a high-resolution CBCT image by using a cubic spline interpolation method; then , in the region of interest for caries detection, by comparing the calculation of the demineralization parameters of the original tooth CBCT image and the statistical comparison of the air ...

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Abstract

The invention discloses a dental caries image processing method based on extracted tooth CBCT. The method includes the steps that granular noise filtering is carried out on an original tooth CBCT gray image for performing two-dimensional reconstruction on the extracted tooth CBCT; according to the filtered original tooth CBCT gray image, a background air brightness average gray value of the image in an air area is determined; by means of a human interaction region of interest and according to test recognition requirements, the edge of the region of interest, to be observed, of an enamel or dentin region of a tooth surface is selected; according to the background air brightness average gray value, a demineralization parameter of dental caries lesion in the gray image is calculated; by comparing the background air brightness average gray value in the original tooth CBCT gray image and the demineralization parameter with a preset threshold, dental caries flecks on a tooth are determined. By means of the technical scheme, detection and positioning of CBCT image caries can be achieved, and diagnosis accuracy of the dental caries in the CBCT image can be improved.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a caries image processing method based on CBCT of isolated teeth. Background technique [0002] Dental caries (Dental Caries) is a progressive lesion of dental hard tissue caused by a combination of factors in the oral cavity. It is manifested as demineralization of inorganic matter and decomposition of organic matter. The evolution of sexual lesions. Since the 20th century, with the improvement of material living standards and changes in people's eating habits and structure, the scope of dental caries has become larger and larger, seriously endangering human health. Generally, the average caries prevalence rate can be around 90%. It is the main common disease of the oral cavity and one of the most common human diseases. Early detection and treatment is becoming a topic of increasing concern to human beings. [0003] With the continuous development of computer technology and in...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T2207/20104G06T2207/30036
Inventor 李居朋陈后金张晋芳曹霖申艳张祖燕
Owner BEIJING JIAOTONG UNIV
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