Quantitative evaluation of area-based stereo matching

This paper presents a quantitative evaluation of two area-based stereo matching approaches aimed at real-time applications. The former approach follows a standard scheme based on a double matching phase (DMP) and aimed at rejecting unreliable disparities by enforcing the left-right consistency constraint. This approach is representative of several implementations known in literature. The latter approach, proposed recently, relies on a single matching phase (SMF) and rejects unreliable matches by detecting violations of the uniqueness constraints. We review first the two approaches and analyse their differences. Successively, we provide quantitative results, using standard stereo pairs with ground truth, aimed at evaluating and comparing the two approaches in terms of matching reliability and speed.