High-precision representation of high-speed scene dynamics with a neuromorphic imaging system

This paper presents and evaluates an ultra high-speed synchronous arbitration process for transient pixelspsila data of a neuromorphic temporal contrast imaging sensor. Enabling a high-precision timestamping, this system demonstrates its uniqueness for handling high peak rates and preserving the main advantage of the neuromorphic electronic systems, that is high and accurate temporal resolution. Based on synchronous arbitration concept, the timestamping has accuracy better than 1 mus. Both synchronous and (state-of-the-art) asynchronous arbiters have been implemented in the neuromorphic dual-line vision sensor chip in a standard 0.35 mum standard CMOS process. The performance analysis of both arbiters and the advantages of the synchronous arbitration over asynchronous arbitration in capturing high-speed objects are discussed in details.