VLSI Signal Processing,
vol. 42, no. 1, pp. 57-68, Jan. 2006.
Designing an Embedded Video Processing Camera using a 16-bit Microprocessor for a Surveillance System
Brian L. Evans, and
J. K. Aggarwal
Department of Electrical and Computer Engineering,
Engineering Science Building,
The University of Texas at Austin,
Austin, TX 78712-1084 USA
This paper describes the design and implementation of a hybrid
intelligent surveillance system that consists of an embedded system
and a personal computer (PC)-based system. The embedded system performs
some of the image processing tasks and sends the processed data to
the PC. The PC tracks persons and recognizes two-person interactions
by using a grayscale side view image sequence captured by a stationary
camera. Based on our previous research, we explored the optimum division
of tasks between the embedded system and the PC, simulated the embedded
system using dataflow models in Ptolemy, and prototyped the embedded system in
real-time hardware and software using a 16-bit CISC microprocessor.
This embedded system processes one 320x240 frame in 89 ms, which yields
one-third of the rate of 30Hz video system. In addition, the real-time
embedded system prototype uses 5.7K bytes of program memory, 854K bytes
of internal data memory and 2M bytes external DRAM.
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Last Updated 03/29/06.