Analog Integrated Circuit for Motion Detection with Simple-Shape Recognition Based on Frog Vision System |
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Authors: | Kimihiro Nishio Hiroo Yonezu Yuzo Furukawa |
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Institution: | (1) Department of Electrical and Computer Engineering, Yonago National College of Technology, 4448 Hikona-cho, Yonago Tottori, 683-8502, Japan;(2) Department of Electrical and Electronic Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi Aichi, 441-8580, Japan |
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Abstract: | We proposed in this research a novel two-dimensional network based on the frog visual system, with a motion detection function
and a newly developed simple-shape recognition function, for use in object discrimination by integrated circuits. Specifically,
the network mimics the signal processing of the small-field cell in a frog brain, consisting of the tectum and thalamus, which
generates signals of the motion and simple shape of an object. The proposed network is constructed from simple analog complementary
metal oxide semiconductor (CMOS) circuits; a test chip of the proposed network was fabricated with a 1.2 μm CMOS process.
Measurements on the chip clarified that the proposed network can generate signals of the moving direction, velocity, and simple
shape, as well as perform information processing of the small-field cell. Results with the simulation program with integrated
circuit emphasis (SPICE) showed that the analog circuits used in the network have low power consumption. Applications of the
proposed network are expected to realize advanced vision chips with functions such as object discrimination and target tracking. |
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Keywords: | analog integrated circuit motion detection shape recognition small-field cell vision chip |
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