面向术前皮瓣设计:三维创面的形态学展开与分析  

Morphological Flattening Algorithm for Skin Wounds Based on Hierarchical Value

作　　者：纪小刚 栾宇豪 张溪溪 张建安 胡海涛 Ji Xiaogang;Luan Yuhao;Zhang Xixi;Zhang Jian’an;Hu Haitao(School of Mechanical Engineering,Jiangnan University,Wuxi 214122;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Wuxi 214122)

机构地区：[1]江南大学机械工程学院,无锡214122 [2]江苏省食品先进制造装备技术重点实验室,无锡214122

出　　处：《计算机辅助设计与图形学学报》2020年第6期989-996,共8页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(51105175,51275210);江苏省“六大人才高峰”资助项目(JXQC-006)。

摘　　要：临床上由于创伤所致的皮肤等软组织缺损创面形状常不规则,目前仅采用样布描记皮瓣形状进行术前设计,其方法较为粗糙,所切取皮瓣往往无法与创面相契合,且影响术后外观.为解决这类问题,提出一种基于层次值的皮肤创面形态学展开方法.首先对皮肤创面进行层次划分,分层拓扑映射至平面.然后结合力学方法模拟皮肤的应力和应变,分层优化皮肤创面的展开形状,实现局部创面和创面整体的并行优化.最后对生成的皮肤展开轮廓进行光顺,得到面向术前皮瓣设计的指导方案.通过对十几例不同部位的皮肤创面进行展开与分析,结果表明,文中方法获得的展开结果能更好地与皮肤创面相契合,展开后的面积和边长平均偏差值缩小至10%以内.Because of the irregular shape of skin wounds caused by trauma in clinic,the shape of skin flaps is only described by swatch for preoperative design.The method is rough,and the flaps cut often cannot match the wounds and affect the appearance of the wounds.In order to solve such problems,a skin wound morphological flattening algorithm based on hierarchical value is proposed.Firstly,the skin wound is divided into layers,and maps the layered mesh to the plane topologically.After that,simulates the stress and strain of the skin with mechanical method,and optimizes the shape of the skin wound flattened layer by layer.Then,realizes the parallel optimization of the partial wound and the whole wound.Finally,the multi-resolution smoothing technique is used to smooth the developed boundary contour,and fitting the curve to obtain the guidance plan for preoperative flap design.Through the analysis of more than ten cases of skin wounds in different parts,the results show that the results obtained by the algorithm in this paper can better match with the skin wounds,and the average deviation of the area and length after the flattening is reduced to less than 10%.

关 键 词：形态学展开 样布描记 层次值 拓扑映射 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]