A CMOS Camera with Programmable Real-Time Processing

A 128 times 64 pixels vision sensor is presented, performing on-the-fly spatio-temporal filtering with large flexibility in coefficient assignment. Its operating principle is based on two novel image processing techniques: time-based and pulse-based. The sensor architecture executes pixel-parallel processing, on a 3 times 3 pixel kernel, during integration time on images with dynamic-range up to about 100 dB. The square pixel has a pitch of 32.6 mum with a fill-factor of 24%. It consists of two analog memories and 30 transistors, most of them dedicated to the pixel connectivity. The chip was fabricated in a 0.35 mum CMOS technology and exhibits a total power consumption of 14 mW @ 3.3 V with a computing figure of 2.8 GOPS/mm²