面部软组织二维与三维特征提取系统的比较

Comparison of facial tissue measurements using two-dimensional and three-dimensional character acquisition system

临床医学中常需要对复杂的面部形态进行特征提取与测量。文章比较了利用CCD进行面部软组织图像采集获得二维特征参量和利用逆向工程技术的激光面部软组织三维数据提取三维特征的两种方法,分析各自的原理、系统组成、标定方法与各自特点,利用这两种方法对30人进行了面部二维和三维特征数据提取比较,得出了两种方法的适用条件与限制。试验结果可为整形设计、面瘫、脸部外科手术评估、康复研究等临床应用提供参考。

Complicated characteristic of facial modality acquisition and measurement is commonly needed in clinical environment. Two different methods were compared, one method was acquisition two-dimensional character based on the principle of machine vision with a charge-coupled device （CCD） capturing image, and another method was acquisition three-dimensional character based on the technology of Reverse Engineering with laser scanning capturing image. The principle, composition of the system, calibration and characteristics of different method are analyzed. Two-dimensional and three-dimensional facial data of thirty undergraduates was used to compare different methods. The application and restriction of different methods are concluded. The conclusion of this paper provided a reference for face plastic surgery, facial paralysis, facial surgical evaluation and rehabilitation design.