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Full Tooth Contour Recognition and Model Reconstruction Method Based on CT Images

Published: 25 September 2020 Publication History

Abstract

It is of great significance for the treatment of oral diseases to establish a digital 3d model of teeth based on oral CT images. In order to establish a 3d digital model of teeth by using oral CT images, the contour segmentation, coordinate transformation and surface model reconstruction of oral CT images are required. The structure tensor information can reflect the local structure information of the image by using the multi-channel information, and many models constructed by using the local tensor information have the de-noising effect. Therefore, the area term fused with structural tensor information was added to the (Local Gaussian Distribution Fitting) LGDF model to segment the contour of a single tooth. The segmentation results show that the improved model can be segmented into ideal contours without Interference noise area and false boundary. After the segmentation of all the contours was completed, all the contours were converted from two-dimensional CT coordinates to three-dimensional coordinate forms, and the surface model was obtained by surface reconstruction of three-dimensional scattered point cloud using Crust algorithm. The surface model construction method proposed in this paper has better surface quality.

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    ICBIP '20: Proceedings of the 5th International Conference on Biomedical Signal and Image Processing
    August 2020
    99 pages
    ISBN:9781450387767
    DOI:10.1145/3417519
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 25 September 2020

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    Author Tags

    1. LGDF model
    2. Oral CT image segmentation
    3. coordinate transformation
    4. structure tensor
    5. surface reconstruction

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