Illumination-Guided Stereo Correspondence

This work implements a method to improve correspondence matching in stereo vision by using varying illumination intensities from an external light source. By iteratively increasing the light intensity on the scene, different parts of the scene become saturated in the left and right images. These saturated areas are assumed to correspond to each other, greatly reducing the search space for stereo correspondence and increasing robustness to erroneous matches. The stereo camera and light source used in this work is the DUO3D camera by Code Laboratories. Visually, experimental results show the resultant point clouds from the proposed method is less noisy with fewer outliers compared to standard block matching method, but produces fewer matches.