Title :
Video Sensor Node for Low-Power Ad-hoc Wireless Networks
Author :
Chi, Yu M. ; Etienne-Cummings, Ralph ; Cauwenberghs, Gert ; Carpenter, Paul ; Colling, Kent
Author_Institution :
Johns Hopkins Univ., Baltimore
Abstract :
A video sensor platform consisting of a smart image sensor with focal plane motion processing is presented. The camera node is intended for ultra-low bandwidth ad-hoc wireless networks with data rates of less than 2kB/sec. To meet the targets of low power consumption and low complexity, the CMOS image sensor (consuming 4.2 mW of power at 30 fps) autonomously monitors for scene changes, outputting full image data only when relevant. For this sensor node, several different operating configurations leveraging the analog processing and storage capability of the imager, including a full motion DCT based video compression algorithm are shown. The entire sensor module can operate from 3 AA batteries and consumes 225 mW at full operation.
Keywords :
CMOS image sensors; ad hoc networks; discrete cosine transforms; image motion analysis; intelligent sensors; video coding; CMOS image sensor; DCT; analog processing; focal plane motion processing; power consumption; smart image sensor; storage capability; ultralow bandwidth ad-hoc wireless networks; video compression algorithm; video sensor node; Bandwidth; CMOS image sensors; Cameras; Discrete cosine transforms; Energy consumption; Image sensors; Image storage; Intelligent sensors; Layout; Wireless sensor networks;
Conference_Titel :
Information Sciences and Systems, 2007. CISS '07. 41st Annual Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
1-4244-1063-3
Electronic_ISBN :
1-4244-1037-1
DOI :
10.1109/CISS.2007.4298307
