line symmetric

A method of face center tracking which is based on bilateral symmetry of gradient direction is discussed in this paper.

研究了基于梯度方向双边对称性的旋转人脸中心的跟踪方法。

Based on the methods of fast triangle-triangle overlap test using signed distances,a fast coincident intersection test algorithm for 3-D convex polygons based on clamping-edge pair is presented,which provides a coincident computational method for the overlap judgment between convex polygons and expands the algorithm application object.

以基于带符号距离的三角形快速求交算法为基础,提出一种基于夹边边对的空间平面凸多边形相交快速检测算法,为平面凸多边形间判交问题提供了有效的计算方法,并扩展了算法的应用对象。