DocumentCode :
870355
Title :
Energy-Aware High Resolution Image Acquisition via Heterogeneous Image Sensors
Author :
Kim, Hyungjin ; Rahimi, Mohammad ; Lee, Dong-U ; Estrin, Deborah ; Villasenor, John D.
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, CA
Volume :
2
Issue :
4
fYear :
2008
Firstpage :
526
Lastpage :
537
Abstract :
We present an energy-efficient high resolution image acquisition approach based on a two-tiered system comprising low-cost, low-power, non-actuated, extremely resource-constrained stereo image sensor platforms and more capable but more power-consumptive high resolution imaging platforms with actuation capability. The resource constrained platforms are used to compute 3D object location and subsequently to compute appropriate pan/tilt/zoom settings for the high resolution imaging platforms. The high resolution imaging platforms with actuation capability acquire high resolution images which can be utilized for various recognition purposes. We present a design methodology and system architecture, and evaluate latency and energy tradeoffs in the system. Experimental results show that use of the two-tiered network significantly reduces energy consumption of high resolution image acquisition versus a single-tiered network with minimum loss in detection capability.
Keywords :
fixed point arithmetic; image sensors; object detection; stereo image processing; 3D object location; distributed detection; fixed point arithmetic; high resolution imaging platforms; image acquisition; pan-tilt-zoom settings; single-tiered network; stereo image sensor; system architecture; two-tiered network; Computer architecture; Delay; Design methodology; Energy consumption; Energy efficiency; Energy resolution; High-resolution imaging; Image recognition; Image resolution; Image sensors; Distributed detection; finite wordlength effects; fixed point arithmetic; image sensors;
fLanguage :
English
Journal_Title :
Selected Topics in Signal Processing, IEEE Journal of
Publisher :
ieee
ISSN :
1932-4553
Type :
jour
DOI :
10.1109/JSTSP.2008.925985
Filename :
4629873
Link To Document :
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