基于外极线分区的动态立体匹配算法

Dynamic Stereo Matching Algorithm Based on Epipolar Line Segment

基于区域的立体匹配算法仅针对支撑窗内的灰度信息定义匹配代价函数,导致在弱(无)纹理区域采用WTA优化出现歧义性。该文在外极线分区的基础上,改用区域作为匹配基元,针对歧义性区域,在代价函数中引入遮挡项和平滑项,并按照区域优先级的高低,动态匹配相应区域,获得可靠的视差信息。实验证明,该算法在保持实时性的同时对弱纹理区域处理具有有效性。

In region-based stereo matching algorithm, the ambiguity parts, which can not be optimized by WTA, normally are considered as error matches and are discarded. This paper presents a novel approach based on epipolar line segment. It adopts I-D region as match unit and introduces occlusion and smooth terms to construct a new match cost function, density disparity map can be obtained in virtue of static and dynamic matching strategy. Experimental results validate the algorithm to textureless regions and real-time.