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Motion Perception Using Analog VLSI

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Abstract

Motion perception is arguably a fundamental mechanism used by natural species to accomplish a number of tasks, such as navigating freely in an unknown environment. Traditional motion perception methods tend to be computationally intensive, requiring powerful computers and large memories. However, by copying biological mechanisms, such as elementary motion discrimination at the early stages of the visual processing paths, it should be possible to build small and efficient motion perception systems. This paper describes the manner in which a simple motion perception model based on the insect visual system has been implemented using mixed analog/digital VLSI. The device has been fabricated in a 2 micron double metal, double polysilicon process, and comprises 61 photo-detectors, and associated analog and digital circuitry. While not entirely successful in that component mismatches hamper the detection of dark-to-bright changes in contrast, the results clearly show the feasibility of using such a device in autonomous control systems.

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Authors and Affiliations

  1. Defence Science and Technology Organisation, TSSD, 180 Labs, PO Box 1500, Salisbury, SA, 5108, Australia

    Andre J.S. Yakovleff

  2. Department of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia

    Alireza Moini

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  1. Andre J.S. Yakovleff
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  2. Alireza Moini
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Yakovleff, A.J., Moini, A. Motion Perception Using Analog VLSI. Analog Integrated Circuits and Signal Processing 15, 183–200 (1998). https://doi.org/10.1023/A:1008203907863

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