Depth perception circuit employing serial output signals from two vision chips

The retina is an intelligent vision sensor indispensable in real-time image processing of animals. The parallel image processing function of the retina was realized in an analog CMOS integrated circuit (vision chip). The application to high-order information processing of the vision chip is considered. Depth perception is given as one of such processing. When animals and robots go around in the real three-dimensional world, depth perception is indispensable. Binocular disparity is one of the most important clues for depth perception. In this work, a simple depth perception circuit based on binocular disparity was designed and fabricated, and the correct experimental results were obtained for some targets.