Double Vision: a variant on traditional dense stereo techniques

This work, conceptually envisaged by Prof. R. B. Fisher, undertook the augmentation of one of the original approaches in the dense stereo eld by Cox et al. [1]. The aim was to introduce explicit vertical constraint into the Cox algorithm and reduce the streaking and speckling noise e ects commonly associated with stereo results from this approach. These e ects are commonly attributed to the lack of vertical constraint in this algorithm caused by scan-line independence in the process of matching a pair of recti ed stereo images (e.g. Pentagon images of Figure 1). Here scan-line inter-dependence was introduced by matching the scan-lines in pairs as opposed to in isolation and thus this vertical pairing introduces explicit vertical matching constraint. This approach achieved some limited improvement and is presented by example in Figure 1 for the common Pentagon stereo test images.