The SCERPO Vision System

THE PREVIOUS CHAPTERS have described a number of separate components that would need to function together to perform visual recognition. In this chapter, an implemented vi­sion system will be described that combines many of these components into a functioning system for performing recognition. The system has been named SCERPO (an acronym for Spatial Correspondence, Evidential Reasoning, and Perceptual Organi­zation). All code for this system was written over a relatively short period by a single person, which required that each com­ponent be simplified over the more complete versions previously described. For example, curve segmentation is performed only for straight line segments rather than arbitrary curves, object models are presumed to be fully specified with no unknown in­ternal parameters, perceptual organization has been simplified, and the evidential reasoning component does little more than an exhaustive search. Nevertheless, the system has a high level of performance in comparison to most previous vision systems, and it clearly demonstrates the potential for the methodology as a whole.