Title :
Temporal change threshold detection imager
Author :
Mallik, Udayan ; Clapp, Matthew ; Choi, Edward ; Cauwenberghs, Gert ; Etienne-Cummings, Ralph
Author_Institution :
Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
A 90×90 active pixel sensor (APS) achieves 2% in-pixel change/motion detection at 30f/s consuming 4.2mW. The 6T2C 25μm × 25 μm pixel in 0.5 μm 2P3M CMOS provides intensity readout, detection of change events and polarities. Event address and APS value output are asynchronous, facilitating compression. The imager is intended for low-power low-bandwidth surveillance network applications.
Keywords :
CMOS image sensors; image motion analysis; low-power electronics; surveillance; 0.5 micron; 4.2 mW; 6T2C 2P3M CMOS; APS value output; active pixel sensor; compression; event address; in-pixel change/motion detection; intensity readout; low-power low-bandwidth surveillance; temporal change threshold detection imager; Capacitors; Circuits; Decision making; Image coding; Image sensors; Intelligent networks; Intelligent sensors; Pixel; Switches; Threshold voltage;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1494019
