Abstract
DIAS is a multilevel-multiprocessor picture information system architecture. It receives many pictures simultaneously from its environment and ‘decides’ how to process them according to its built up experience. This paper deals with the hardware design of the image preprocessor for the DIAS system. Several details concerning the image acquisition are discussed, including a unique photoarray camera and a hardware preprocessor which act to acquire and reduce the amount of data provided to the Master-Planner processor of the DIAS structure. In particular, the image preprocessor receives the image data in parallel and generates a number of critical image parameters, such as average intensities of various picture regions, geographic locations of the informative picture regions, number of pixels, etc., appropriate for fast decision making by the Master-Planner processor. The internal circuitry and functions of the image preprocessor are presented as well as a simple VLSI realization.
Published Version
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