中文摘要：

提出了一种新的基于编码结构光和外极线约束的自由曲面立体视觉测量方法。这种方法有效解决了立体视觉中的图像匹配问题；外极线约束将可能的候选点限制在直线分布，引入编码光用来确定光栅条纹的级次；这种方法极大地减小了图像匹配的运算量，同时减小了错误匹配的概率；实验表明．采用编码光栅投影视觉测量能够高效准确地测量自由曲面的三维轮廓。

英文摘要：

A new method of stereovision profilometry based on coding structured light and epipolar constraints is presented. With this method, corresponding problems are easily and precisely settled. Epipolar constraint is applied to limit candidate--matching point to a line distribution and coding structured light is used to tell the grating index. This method saved computational time greatly and miseorrespondenences are reduced at the same time. Using grating projection and stereo matching based on these constraints, free-form 3--D profiles can be measured efficiently and accurately,