Hyeon-cheol YANG1, Yoon-sup KIM1, Seong-soo LEE1, Sang-keun OH2, Sung-hwa KIM2, Doo-won CHOI2
1. School of Electronic Engineering, Soongsil University, Seoul 156-743, Korea;2. HyVision System Inc., Seongnam 462120, Korea
Abstract-Surveillance system using active tracking camera has no distance limitation of surveillance range compared to supersonic or sound sen sors. However, complex motion tracking algorithm requires huge amount of comput ation, and it often requires expensive DSPs or embedded processors. This paper p roposes a novel motion tracking unit based on different image for fast and simp le motion tracking. It uses configuration factor to avoid noise and inaccuracy. It reduces the required computation significantly, so as to be implemented on Fi eld Programmable Gate Array(FPGAs) instead of expensive Digital Signal Processin g(DSPs). It also performs calculation for motion estimation in video compression , so it can be easily combined with surveillance system with video recording fun ctionality based on video compression. The proposed motion tracking system imple mented on Xilinx Vertex-4 FPGA can process 48 frames per second, and operating frequency of motion tracking unit is 100 MHz.
Key words-active tracking camera; Surveillance system; differential image; moving picture encoding
Manuscript Number: 1674-8042(2010)03-0233-05
dio: 10.3969/j.issn.1674-8042.2010.03.07
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