| 摘要 |
The present invention is to provide a method for extracting the structure of teeth automatically from a computed tomography image. The matching rate of the real teeth of a testee to teeth information obtained by automatically extracting the set of teeth of the testee through an image processing in the CT image of the testee used for orthodontic treatment is improved. Thereby, accurate orthodontic treatment is supported and also a variation of the teeth and teeth movement in the orthodontic treatment are quantitatively analyzed. [Reference numerals] (AA) Start; (BB) End; (S10) Step for obtaining a plurality of CT images in a CT imaging apparatus; (S100) Step for repeatedly infilling masking-processed teeth images; (S110) Step for morphologically filtering the infilled teeth images; (S120) Step for extracting edge information of the morphologically filtered teeth images; (S130) Step for extracting the structure of teeth by a quadratic polynomial fitting algorithm based on the edge information of the teeth images; (S140) Step for outputting the structure of teeth automatically extracted through an image output device; (S20) Step for selecting a single CT image on an image process device; (S30) Step for infilling the selected CT images; (S40) Step for processing an anisotropic diffusion filter of the infilled CT image; (S50) Step for binarizing the CT images by a threshold value; (S60) Step for eroding the binarized CT images; (S70) Step for processing the automation selection of the eroded CT images; (S80) Step for expanding the teeth images in which an automatic selection is processed; (S90) Step for masking-processing the teeth images in which the expansion is processed |
