用于头面部装备设计的3D头部模型的标准化处理

Standardization of Three Dimensional Head Model for Head and Face Equipment Design

根据医用CT测得的头部切片的边界数据,采用傅里叶级数拟合各个切片的外形轮廓,建立了一种分层表示的3D头部数学模型·为了得到能够反映特定人群综合特点的标准头部模型,根据人类面部的主要特征定义了若干特征层,并根据特征层相匹配的原则,对样本进行了平均处理,构造了3D标准头部模型·作为实例,用98个样本构造了一个标准头部模型·

Accurate head shape data are needed when designing various complicated equipments for head and face. A 3D head model can supply enough information. This paper provides a multi-layer model to reconstruct 3D human head shape. The primary data acquired from human head CT graphics and Fourier series is used to fit the border of each graphic. In order to construct a standard 3D head model by averaging a set of samples correctly, several character layers are defined. Detail method and formulas for constructing the standard 3D head model are presented in this paper. As an example, a standard model from 98 samples is built up.