CAJ | 학술논문

针对医学图像中脊椎分割的难题，提出一种基于三维形变曲面模型的分割方法。首先，为防止过度分割，在原有“气球”模型的基础上，重新设计一种模型约束力（对流力）。其次，利用图像边界与区域信息，得到整体能量函数方程。在图像力和模型约束力的共同约束下，新模型沿着能量函数极小化的方向进行水平集演化，形变模型逐步演化成人体脊椎的精确模型。实验表明，该方法能有效进行脊椎分割，解决了仅使用单一图像信息而造成分割精确度不够的问题。
침대의학도상중척추분할적난제，제출일충기우삼유형변곡면모형적분할방법。수선，위방지과도분할，재원유“기구”모형적기출상，중신설계일충모형약속력（대류력）。기차，이용도상변계여구역신식，득도정체능량함수방정。재도상력화모형약속력적공동약속하，신모형연착능량함수겁소화적방향진행수평집연화，형변모형축보연화성인체척추적정학모형。실험표명，해방법능유효진행척추분할，해결료부사용단일도상신식이조성분할정학도불구적문제。
In view of the problem of vertebral segmentation in the medical image ,a new verte‐bral segmentation method based on three‐dimensional deformable model is proposed .Firstly , based on the original ball model ,a convective force is designed ,and it can effectively prevent o‐ver‐segmentation .T hen ,calculating the image boundary and regional information ,the overall energy function equation can be obtained .Finally ,the deformation model evolves along with the direction of energy function minimization ,so that the image local feature matches with the deformation model .Using numerical methods ,so it can gradually evolve into the boundary con‐tour of the vertebral .According to the above steps to create a three‐dimensional model of the vertebral .The experiments on series of vertebral CT images show that this scheme is accurate and fast ,and has a more satisfactory segmentation results for the weak narrow concave side .