Tooth position detection and missing tooth marking method and device

Abstract

The invention provides a tooth position detection and missing tooth marking method and device. The method comprises the steps: obtaining the image data of an original dental panoramic film, and pre-processing the image data of the original dental panoramic film to obtain the image data of a to-be-processed dental panoramic film; inputting the image data of the to-be-processed dental panoramic filminto a tooth position detection model, and outputting a tooth position detection result set; based on a bounding frame, calculating the center of the bounding frame as tooth position coordinates; according to the tooth position coordinates, respectively carrying out linear fitting on an upper row of tooth positions and a lower row of tooth positions in the tooth position detection result set, wherein the fitting function is y = k*abs(x-c); comparing FDI tooth position representation with the tooth position detection result set to confirm a missing tooth position; determining unique coordinatepositions of the missing tooth based on the fitting function, and constructing a missing tooth marking result set based on the missing tooth position and the missing tooth coordinates; and based on the tooth position detection result set and the missing tooth marking result set, visually outputting the original dental panoramic film image data.

Description

technical field [0001] The invention relates to the field of medical image analysis and pattern recognition, in particular to a method and device for tooth position detection and missing tooth marking. Background technique [0002] Dental panoramic X-ray technology is widely used in the diagnosis of oral and maxillary diseases due to its advantages of high efficiency and low radiation dose. The automated oral diagnosis system can provide effective clinical decision-making assistance for dental medical workers, save diagnosis time, and reduce the negative impact of stress and fatigue during film reading. [0003] In the process of oral diagnosis, tooth position detection is of great significance to the detection and analysis of oral diseases. Missing tooth markers provide important information about the health of your teeth. Usually, the detection of tooth positions requires medical workers to judge the teeth one by one according to the panoramic film and mark the tooth pos...

AI Technical Summary

Problems solved by technology

Therefore, traditional image processing methods that rely on pixel-level feature descriptors, such as level set, clustering and segmentation algorithms, are difficult to play a role in practice

In addition, panoramas produced by models produced by different manufacturers also have different statistical feature distributions, making it difficult for algorithms that rely on artificial statistical features to adapt to multi-model scenarios

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