Analysis of the stereo correspondence process in scenes with narrow occluding objects

Most contemporary stereo correspondence algorithms impose global consistency among candidate match-points by solely using a spatial hierarchy mechanism. This paper analyzes the stereo matching failures caused by the spatial hierarchy mechanism in the presence of narrow occluding objects. The lessons learned from this occlusion analysis are used to formulate a new global matching framework-dynamic disparity search. The authors present experimental results showing a significant decrease in the false positive match-rate with a dynamic disparity search-based stereo algorithm as compared to a spatial hierarchy mechanism-based algorithm