Analog VLSI Circuits for Attention-Based, Visual Tracking

Part of Advances in Neural Information Processing Systems 9 (NIPS 1996)

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Timothy Horiuchi, Tonia Morris, Christof Koch, Stephen DeWeerth


A one-dimensional visual tracking chip has been implemented us(cid:173) ing neuromorphic, analog VLSI techniques to model selective visual attention in the control of saccadic and smooth pursuit eye move(cid:173) ments. The chip incorporates focal-plane processing to compute image saliency and a winner-take-all circuit to select a feature for tracking. The target position and direction of motion are reported as the target moves across the array. We demonstrate its function(cid:173) ality in a closed-loop system which performs saccadic and smooth pursuit tracking movements using a one-dimensional mechanical eye.