基于语义参数模板的受损骨骼复原方法  

Restoration of damaged bone based on semantic parameter template

作　　者：何坤金 张玉雪 翁益平[3] 陈义仁 陈正鸣 HE Kunjin;ZHANG Yuxue;WENG Yiping;CHEN Yiren;CHEN Zhengming(College of Internet of Things Engineering,Hohai University,Changzhou 213022,China;Changzhou City Key Laboratory of Orthopedic Implants Digital Technology,Changzhou 213022,China;Department of Orthopedics,the Second People s Hospital of Changzhou,Changzhou 213003,China)

机构地区：[1]河海大学物联网工程学院,江苏常州213022 [2]常州市图形图像与骨科植入物数字化技术重点实验室,江苏常州213022 [3]常州市第二人民医院骨科,江苏常州213003

出　　处：《计算机集成制造系统》2020年第12期3375-3385,共11页Computer Integrated Manufacturing Systems

基　　金：常州市重点研发计划(社会发展科技支撑)资助项目(CE20195029);国家自然科学基金资助项目(61772172);中央高校基本科研业务费专项资金资助项目(B200204036);江苏省研究生科研与实践创新计划资助项目(B200203144)。

摘　　要：为解决骨骼参数快速测量与受损骨骼修复问题,提出一种带有语义参数的骨骼模板构建及其变形方法。首先,基于已有的平均化骨骼模型,通过人工标注几何参考元素的方式生成含有语义参数的骨骼模板。其次,为测量目标骨骼参数,利用模板配准与特征点映射方式实现骨骼参数的自动获取,并建立参数间约束关系。最后,根据受损骨骼测量参数与约束关系指导骨骼模板进行整体变形,基于三棱锥截面分割与配准,进行局部几何修改,实现受损骨骼在形态与细节上的修复。以长骨中的股骨为例,通过对受损骨骼进行复原验证了所提方法的有效性和可行性,进而为后期骨科植入物个性化设计等提供便利。To solve the problems of rapid measurement of bone parameters and repair of damaged bones,a skeleton template construction with semantic parameters and its deformation method were proposed.Based on the existing averaging skeleton model,a skeleton template witsemantic parameters was generated by manually annotating geometric reference elements.The template registration and feature point mapping were used to realize the automatic acquisition of bone parameters,and the constraint relationship between parameters was established.According to the measured parameters and constraints,the skeleton template was guided to perform overall deformation.Based on the triangular pyramid cross-section registration,the local geometric modification was performed to repair the damaged bone in shape and detail.By taking the femur as an example,the effectiveness and feasibility of the method were verified with the restoration of fracture,which facilitated the personalized design of the orthopedic implant.

关 键 词：语义参数 模板 参数化建模 双向映射 受损骨骼修复 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]