CAJ | 학술논문

采用模糊连接分割算法克服牙齿边界的模糊性对待选牙齿进行初分割,以获取完整的外缘轮廓,其次采用牙弓拟合及牙缝定位方法获取牙缝边界信息,并对初分割结果施以边界约束,从而克服模糊连接分割算法难于分割粘连牙的特点.实验结果表明,该方法能够有效地分割出单颗牙齿,将其扩展到CT序列切片上,即可实现单颗牙齿的三维分割,克服畸形牙的分割难题.
채용모호련접분할산법극복아치변계적모호성대대선아치진행초분할,이획취완정적외연륜곽,기차채용아궁의합급아봉정위방법획취아봉변계신식,병대초분할결과시이변계약속,종이극복모호련접분할산법난우분할점련아적특점.실험결과표명,해방법능구유효지분할출단과아치,장기확전도CT서렬절편상,즉가실현단과아치적삼유분할,극복기형아적분할난제.
An innovative method is proposed. Firstly, the tooth is segmented to get the intergrated outlier with fuzzy connectedness algorithm to overcome the blurred boundary of CT image, secondly teeth interstices are obtained with dental arch fitting and teeth interstices positioning method, lastly the outcome of the first step is confined with boundary condition by teeth interstices. The method offsetted the deficiency of fuzzy algorithm in segmenting the adhere parts. As the experiments showed, the proposed method segment single tooth effectively, and implement the 3d segmentation for segmenting abnormal tooth easily, when it is extended to CT series.