Three-Dimensional Evaluation of Facial Contour and Units Associated with Visual Images

最近对激光扫描技术的研究为精确的面部三维记录提供了一种潜在的有用技术。在这项研究中，使用表面激光扫描结合三维照明技术，对健康志愿者和面神经麻痹患者在各种选择的面部姿势下的面部轮廓和面部单元进行了线性和面积测量。使用激光扫描仪对面部进行三维表面测量。利用计算机图形照明技术产生由高光和阴影组成的面部图像，这些图像浮雕面部轮廓和单位。然后定量测量面部角度和面积的变化，分析面部形态学随面部表情的变化。脸颊和鼻腔单位的角度和宽度的变化被发现与潜在的模拟肌肉的作用所施加的尺寸变化有关。该系统在面部轮廓、单位和运动的动态监测和评估方面具有潜在的价值。

Recent investigations in laser scanning technology provide a potentially useful technique for accurate three-dimensional documentation of the face. In this study, linear and area measurements of the facial contour and facial units have been recorded in a variety of chosen facial postures using surface laser scanning combined with three-dimensional lighting techniques on healthy volunteers and patients with facial nerve paralysis.Three-dimensional surface measurement of the face was taken using a laser light scanner. Computer graphics lighting techniques were used to produce facial images constituted by highlights and shadows, which emboss facial contour and units. Then quantitative measurements of changes in facial angles and areas were made to analyze morphological changes of the face accompanying facial expression. Changes of angles and widths of the cheek and nasal units were found to be associated with dimensional changes imposed by the action of the underlying mimetic muscles. This system has potential value for both dynamic monitoring and evaluation of facial contour, units, and movement.