Live demonstration: A 64×64 pixels UWB wireless temporal-difference digital image sensor

We demonstrate a low power temporal-difference image sensor with wireless communication capability designed specifically for imaging sensor networks. The event-based image sensor features a 64×64 pixel array and can also report standard analog intensity images. An ultra-wide-band (UWB) radio channel allows to transmit digital temporal difference images wirelessly to a receiver with high rates and reduced power consumption. The sensor wakes up when it detects enough scene changes and only communicates meaningful frames. A complete demo platform, for both the wireless sensor (transmitter) and a receiver was developed. Power consumption is 0.9 mW for the sensor and 15 mW for radio transmission to 4 m with rates of 1.3 Mbps and 160 fps.