颅面的径向曲线统计复原模型  

Craniofacial statistical reconstruction by radial curves

作　　者：王琳 赵俊莉 黄瑞坤 李淑娴[2] 李守哲 WANG Lin;ZHAO Jun-li;HUANG Rui-kun;LI Shu-xian;LI Shou-zhe(School of Data Science and Software Engineering,Qingdao University,Qingdao 266071,China;Mechanical Engineering College,Dalian University,Dalian 116622,China;College of Letters and Science,University of Wisconsin-Madison,Madison,Wisconsin 53706,USA)

机构地区：[1]青岛大学数据科学与软件工程学院,山东青岛266071 [2]大连大学机械工程学院,辽宁大连116622 [3]威斯康星大学麦迪逊分校文理学院,美国威斯康星州麦迪逊53706

出　　处：《光学精密工程》2020年第12期2729-2736,共8页Optics and Precision Engineering

基　　金：国家自然科学基金资助项目(No.61702293,No.11572066,No.11602047);中国博士后科学基金资助项目(No.2017M622137);教育部虚拟现实应用工程研究中心基金资助项目(No.MEOBNUEVRA201601);山东省重点研发计划重大科技创新工程资助项目(No.2019JZZY020101)。

摘　　要：颅面复原是根据给定的未知颅骨数据来估算对应的面貌,在法医学、人类学、公安刑侦等领域都有重要的应用价值。针对颅面复原中手工提取特征点费时费力的问题,本文依据颅面几何结构,在三维颅面模型上自动提取以鼻尖点为起点的均匀分布于人脸的径向曲线作为颅面的特征表示,并以颅骨和人脸面皮上提取的径向曲线作为训练样本数据,构建了一种基于径向曲线的颅面统计复原模型,通过由这种模型得到的先验知识联合待复原颅骨数据,来求得面皮数据。实验结果表明:与基于主成分分析(PCA)进行的颅面复原方法相比,本文提出的基于径向曲线的颅面统计复原方法的复原精度提高了2.95倍,速度提高了4.01倍,因此本文方法降低了模型中样本数据的维度,提高了颅面复原的精度和速度,颅面复原的效果得到进一步的改善。Craniofacial reconstruction is used to estimate facial data for a given unknown skull data,and it has been widely applied in various fields such as forensic science,anthropology,and criminal investigation.It is time-consuming and laborious to extract feature points manually during craniofacial reconstruction.In this study,radial curves uniformly distributed on the face were automatically extracted starting from the nose tip as a feature representation of the three-dimensional craniofacial model based on its geometry structure.The extracted radial curves and skull data were used as training sample data to establish a statistical model for craniofacial reconstruction.Previous knowledge obtained using the statistical model and skull data were used to estimate the data for the face.The experimental results showed that when the craniofacial statistical method based on the radial curves was applied,the craniofacial reconstruction accuracy improved by 2.95 times;moreover,the reconstructed speed was 4.01 times faster than that of the craniofacial reconstruction method based on principal component analysis.Therefore,our method reduces the dimension of craniofacial data and improves the accuracy and speed of the reconstruction results.

关 键 词：颅面复原 三维颅面模型 径向曲线 主成分分析 统计模型 

分 类 号：TP394.1[自动化与计算机技术—计算机应用技术] TH691.9[自动化与计算机技术—计算机科学与技术]