Dynamic scenes and object descriptions

In this paper we will address several fundamental concepts in the analysis of dynamic scenes and will describe a system that derives three-dimensional object representations from the multiple views provided by dynamic images. The two fundamental concepts are that of the correspondence problem (1) and occlusion analysis (2). The former involves the process which is necessary to span the discontinuity inherent in image sequence representations of dynamic scenes. A detailed description of a dynamic scene analysis system (3) is presented with special emphasis on the two major goals pursued in the work, namely, to lessen the dependence on feature point measurements in a structure from motion system and to develop a descriptive three-dimensional object representation that is suitable for dynamic scene analysis systems. The results are a structure from occluding contours system and a "volume segment" representation scheme.