Computational Sensors -- Vision VLSI

Kiyoharu AIZAWA  

IEICE TRANSACTIONS on Information and Systems   Vol.E82-D   No.3   pp.580-588
Publication Date: 1999/03/25
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: INVITED SURVEY PAPER
computational sensor,  smart sensor,  vision chip,  intelligent sensor,  CMOS sensor,  silicon retina,  image processing system,  visual information processing system,  vision system,  

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Computational sensor (smart sensor, vision chip in other words) is a very small integrated system, in which processing and sensing are unified on a single VLSI chip. It is designed for a specific targeted application. Research activities of computational sensor are described in this paper. There have been quite a few proposals and implementations in computational sensors. Firstly, their approaches are summarized from several points of view, such as advantage vs. disadvantage, neural vs. functional, architecture, analog vs. digital, local vs. global processing, imaging vs. processing, new processing paradigms. Then, several examples are introduced which are spatial processings, temporal processings, A/D conversions, programmable computational sensors. Finally, the paper is concluded.