TV-L1分割方法与三维重建技术在骨外科手术中的应用  

TV-L1 segmentation method and 3D reconstruction technology in orthopaedic surgery

作　　者：张锡英[1] 张燕[1] 邱兆文[1] 

机构地区：[1]东北林业大学信息与计算机工程学院,哈尔滨150040

出　　处：《黑龙江大学自然科学学报》2017年第3期366-371,共6页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(31570712);哈尔滨市科技创新人才研究专项资金资助项目(RC2016JQ010006)

摘　　要：对骨外科CT数据进行三维重建有利于骨外科专家对骨科患者的临床诊断。通过常规骨折案例和带有金属植入物骨折两个不同案例的分析,进一步讨论了三维重建技术在骨外科领域的应用,提出一个新的三维变分框架,其中包含两个分割过程:对二维CT图像进行TV-L1分割,提取出感兴趣区域;对CT图像进行三维重建后,对三维图像再一次进行TV-L1分割处理,给出了一个更清晰的三维体绘制结果。在TV-L1分割算法中,采用一个双辅助变量和快速主-对偶方法来提高TV-L1模型的计算速度。Three dimensional reconstruction of CT data in orthopaedic surgery is beneficial to expert clinical diagnosis of orthopedic patients. The application of three-dimensional reconstruction technique in the field of orthopaedic surgery is discussed based on the analysis of conventional fracture eases and fracture with metal implants cases. A new three-dimensional variation framework is proposed, which contains two segmentation processes. TV - L1 segmentation is performed on two dimensional CT image to extract the interested region. Three-dimensional reconstruction is taken on the CT image to perform TV - L1 segmentation on three-dimensional CT image once again so as to provide a more clear 3D volume rendering result. TV - L1 segmentation algorithm adopts a dual auxiliary variable and a fast master dual method to improve the calculation speed of the TV- LI model .

关 键 词：三维重建 CT TV-L1 快速主-对偶方法 

分 类 号：O175.13[理学—数学]