An Address-Event Vision Sensor for Multiple Transient Object Detection

We present a vision sensor chip designed to detect multiple transient objects—objects that either move or change in light intensity—and output their locations using address-event representation. The sensor uses a novel onset detector to detect transient objects and a dynamically-wired winner-takes-all circuit to group pixels and select the brightest pixel in each object. This paper describes the circuits and also presents measurements that characterize the performance of the sensor chip.