An Analog-digital CMOS circuit for motion detection based on direction-selective neural networks
نویسندگان
چکیده
We have developed a compact CMOS motiondetection circuit based on a direction-selective neuralnetwork architecture. The circuit consists of asynchronous current-mode digital subcircuits for edge detection and subthreshold analog subcircuits for motiondetection. SPICE and numerical simulations of the network show that the circuit can successfully extract edge lines from incident images and compute the twodimensional local velocity of the image motion from the movement of the edge lines. The circuit is useful for constructing small-sized, low-power vision processing systems.
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