Tracking and grouping 3D line segments

The authors address the motion tracking problem that arises in the context of a mobile vehicle navigating in an unknown environment where other mobile bodies such as human beings or robots may also be moving. A stereo rig mounted on the mobile vehicle provides a sequence of 3-D maps of the environment. The current stereo system is trinocular and the 3-D tokens used at the moment are line segments corresponding to significant intensity discontinuities in the images. Although the framework to solve the motion tracking problem developed in this work arises in this specific context, the authors believe it should be applicable in other contexts; in particular they could use other 3-D primitives, for example, points, combinations of points and lines, curves