Jenkin, M. Tracking three-dimensional moving light displays, Proc. ACM SIGGRAPH/Sigart Interdisciplinary workshop on motion: representation and perception, Toronto, Canada, 67-70, 1983. Copyright ACM.
A method is presented for tracking the three dimensional motion of points from their changing two-dimensional perspective images as viewed by a nonconvergent binocular vision system. The algorithm relies on a general smoothness assumption to guide the tracking process, and application of the tracking algorithm to a three-dimensional moving light display based on Cutting's[1] Walker program as well as other domains are discussed.Evidence is presented relating the tracking algorithm to certain beliefs about neurophysiological structures in the visual cortex.
Gershon, R., Ali, Y. and Jenkin, M. An explanation system for frame-based knowledge organized along multiple dimensions. Laboratory for Computational Medicine Technical Report LCM-TR83-2, December 1983. Department of Computer Science, University of Toronto.
This paper describes an explanation system for frame-based knowledge about events, as presented in a visual motion expert system. As such, it can be applied to representations that embody different frame organizational relationships such as is_a, part_of, instance_of, similarity and time. This may be contrasted with most current expert system which employ rule-based knowledge representations. In addition, such expert systems typically do not deal with complex spatio-temporal information and only a small number of these have any explanation capabilities. The system described in this document is capable of making inferences about frame comparisons and temporal relationships not present in the knowledge base, and provides output in both textual and pictorial formats. The graphical format is particularly useful for revealing the structure of the knowledge frames. The system has been implemented and tested on a knowledge base designed for human left ventricular peformance and examples of interaction with the system will be presented.
