基于面颅骨建模的三角网格分片拟合曲面算法  

Triangular mesh slice-fitting surface algorithm based on facial skull modeling

作　　者：裴永生[1,2] 杨园超 张世哲 赵建华[3] PEI Yongsheng;YANG Yuanchao;ZHANG Shizhe;ZHAO Jianhua(College of Vehicles and Energy, Yanshan University, Qinhuangdao Hebei 066004, China;Research Institute of Health Industry Technology, Yanshan University, Qinhuangdao Hebei 066004, China;Department of Neurosurgery, The First Hospital of Qinhuangdao City, Qinhuangdao Hebei 066004, China)

机构地区：[1]燕山大学车辆与能源学院,河北秦皇岛066004 [2]燕山大学康养产业技术研究院,河北秦皇岛066004 [3]秦皇岛市第一医院神经外科,河北秦皇岛066004

出　　处：《计算机应用》2019年第A01期168-170,共3页journal of Computer Applications

基　　金：河北省自然科学基金资助项目(E2015203002);秦皇岛市科学技术研究项目(201701B039)

摘　　要：针对人体面颅骨三维模型重建问题,提出一种改善面颅骨模型重建质量的三角网格分片拟合曲面算法(TMPSA)。首先,根据面颅骨曲面的复杂性,提出面颅骨多曲面片点云数据的分割方法,并将其映射到对应平面;然后,引入分片数据的三角网格化法,建立三角网格模型;接着,将三角网格平面映射回三维空间,并拟合曲面;最后,将拟合的面颅骨曲面进行光顺处理。通过对多个面颅骨模型进行重建的结果表明,该算法生成的网格模型质量较高,能够较好地描述点云数据所表示的曲面形态,能够解决复杂空间曲面重构的问题。该算法能够为后续人体面颅骨修复的研究提供良好的基础数学模型。For the problem of three-dimensional model reconstruction of human facial skull, a triangular mesh slice-fitting surface algorithm was proposed to improve the reconstruction quality of facial skull model. Firstly, according to the complexity of facial skull surface, a point cloud data segmentation method of facial skull multi-surface slice was proposed and segmented scattered point cloud were mapped to the corresponding planes. Secondly, a triangle mesh method of the slice data was introduced to establish a triangle mesh model. Thirdly, the triangular mesh planes were mapped back to three-dimensional space and the fitted surfaces were combined together. Finally, the obtained facial skull surface was smoothly processed. The results of the reconstruction of multiple facial skull models show that the mesh model generated by this algorithm has high quality and can describe the surface shape represented by point cloud data, being able to solve the problem of complex spatial surface reconstruction. The proposed algorithm can provide a good basic mathematical model for the human facial skull repair in the future.

关 键 词：空间含孔多曲面 三角网格 分片拟合 曲面重构 光顺处理 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] TP391.72[自动化与计算机技术—计算机科学与技术]