Method and apparatus for generating tooth panorama image, and panorama machine for shooting teeth

Abstract

The invention discloses a method and apparatus for generating a tooth panorama image, and a panorama machine for shooting teeth. The method comprises the following steps: determining a reference detector frame frequency, and according to the reference detector frame frequency, determining a shooting detector frame frequency; according to the shooting detector frame frequency, shooting the teeth of a user so as to generate multiple images; performing shift superposition on the multiple images so as to generate a first panorama image; obtaining a fuzzy area in the first panorama image; and performing frame frequency adjustment on each row in the fuzzy image so as to form a clear image, and integrating the clear image with the first panorama image so as to generate a second panorama image. According to the method provided by one embodiment of the invention, through performing imaging on each row of an image by use of different frame frequency change rules, the teeth of the user, no matter tooth cusps or radix dentis, can be placed in a focusing layer, clear imaging is realized, and the sharpness of the panorama image is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for generating panoramic images of teeth and a panoramic machine for photographing teeth. Background technique [0002] Oral panoramic film, also known as oral surface tomography. At present, it is one of the important detection methods for stomatological diseases. The advantage is that the images of all teeth can be displayed in one X-ray film, and the radiation dose is small. [0003] At present, digital oral panorama films generally use TDI (Time Delayed and Integration) sensors, or narrow array sensors to perform imaging according to the TDI principle. TDI is based on multiple exposures to the same target. Through the method of delay integration, the collection of light energy is greatly increased, the signal-to-noise ratio can be improved, and the weight and volume of the detector can be reduced. [0004] The working principle of TDI r...

AI Technical Summary

Problems solved by technology

[0005] The current problem is: when the user’s teeth are relatively severe, that is, the inclination angle of the anterior teeth is relatively large, when the oral panoramic film is imaged by using the TDI sensor or the narrow array sensor according to the TDI principle, there will be anterior tooth root imaging Unclearness occurs, reducing the clarity of the panoramic image

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