Method of reconstructing three-dimensional dental model based on photos or videos, and method of reconstructing three-dimensional dental model based on RGBD images

Abstract

The present invention discloses a method of reconstructing a three-dimensional dental model based on photos or videos, and a method of reconstructing the three-dimensional dental model based on RGBD images, and relates to the field of image processing. The first method is composed of an incremental approach and a global approach. According to the incremental approach, in the condition that when a generated dental model is not complete enough, or a certain key area of the generated dental model is not clear enough, photos shot at new angles are additionally provided and subjected to treatment, so that a better generating effect is realized. According to the global approach, in the condition that the key areas of the dental model can be clearly expressed when shot at fixed and complete shooting angles, the dental model is generated through one shot without the manual determination or the manual intervention. According to the RGBD approach, the depth information does not need to be calculated, so that the calculation of non-RGBD images is optimized. When the depth information is calculated, the accuracy of the acquired depth information based on RGBD images is higher than that of to-be-estimated non-RGBD images. According to the technical scheme of the invention, corresponding optimization schemes are respectively provided for the above three approaches. Therefore, process flows are reduced and the processing accuracy is improved.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method for reconstructing a three-dimensional dental model using photos or videos and a method for reconstructing a three-dimensional dental model using RGBD images. Background technique [0002] At present, with the development of computer artificial intelligence and machine vision-assisted medical diagnosis design, in the fields of orthodontics and restoration. There is an increasing need for digital three-dimensional impressions of the teeth in the patient's mouth. It is convenient for doctors to perform digital orthodontics and digital restoration treatment on patients' teeth, or track the treatment effect of cases, and save special case samples. Therefore, the demand for scanning and digitizing 3D dental models has also increased. Traditional laser scanning or other scanning methods are expensive and have a long processing cycle; the equipment is huge and cannot be carrie...

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Problems solved by technology

Traditional laser scanning or other scanning methods are expensive and h

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