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Hiroo Yonezu
Department of Electrical and Electronic Engineering, Toyohashi University of TechnologyThe purpose of this study is the development of vision chips which perform early visual processing for motion detection in a retina of vertebrates and a brain of low-level animals. This study leads also to the development of fundamental technologies for analog devices and circuits and massively parallel, fault-tolerant and low-power networks.
Straight motion in a three-dimensional space can be detected based on the model of locusts. A network for the model was constructed with arrays of the fundamental circuits for edge detection, one-dimensional motion detection and range detection. The results of SPICE simulation showed that the output was steeply increased as a target approached the chip. The approaching direction and velocity were detected as well.
A network for motion detection in a three-dimensional space should be developed based on a network for motion detection in a two-dimensional space. Finally, a simple-shape recognition will be combined to the motion detection. Then the motion is represented with the optical flow constructed by mapping the motion vector of each receptive field.