The Applications of Uncalibrated Occlusion Junctions
A. Broadhurst, Roberto Cipolla · 1999
When a scene is viewed from two different viewpoints there are often regions which are only visible in one of the two views. These occluded regions give important information about depth discontinuities in the image. When a background line is obscured by a foreground object, it forms a T-junction in the image, and these junction points can be used to detect occlusion. Two algorithms are presented in this paper. The first algorithm uses the trifocal tensor to automatically locate T-junctions visible in three views, whilst the second application uses junction points to obtain a constraint for the detection of planar surfaces. 1 Introduction The stereo correspondence problem is one of the oldest problems in computer vision, yet a general and robust solution remains elusive. One of the major difficulties for stereo matching is the presence of occlusion, although significant advances have been made by computing an occlusion map whilst computing the correspondence [2, 10, 5, 9]. Th...