Abstract
In this work we deal with the matching process problem using stereo images from real world terrains taken with a Videre STH- DCSG 9mm stereoscopic system. A series of matching algorithms are used, as part of the global stereoscopic process, with the purpose of creating a 3D reconstruction for robotic autonomous navigation in natural and non-structured environments. First, a study about the effects of applying homomorphic filtering to the input images previous to the matching process is carried out. Using this method, a significant enhancement in the disparity map is achieved, obtaining a greater number of true correspondences in relation to applying no filtering at all. Then, a filtering process over the disparities map driven by clusters and based in a spatial continuity premise dismisses false positives or wrong correspondences. Both filtering processes are the main contribution of this work.
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