Abstract:

An algorithm of the quick stereo edge matching method was proposed. Using wavelet transform, edges and their direction angle which is used as a matching constraint in the image were gained. On the basis of the probability density function of the disparity gradient,the mutual coordinate constraint of the corresponding points of the two adjoing points in the continous edge of the left image was educed,then the search area of the matching point in the right image was limited. At last, quick edge matching method based on the two constraint was given.

Key words: stereo edge matching, wavelet transform, edge direction angle, disparity gradient, quick algorithm

摘要：

提出了一种立体视觉边缘匹配快速算法。通过小波变换,得到了图像的边缘和边缘幅角 并定义了边缘幅角约束。由视差梯度的分布密度函数,导出了左图像连续边缘上相邻两点在右图像 中的对应点的坐标间的相互约束关系,从而限定了右图像中匹配点的搜索范围。最后给出了基于视 差梯度约束和边缘幅角约束的快速边缘匹配算法。

关键词: 边缘匹配, 小波变换, 边缘幅角, 视差梯度, 快速算法