한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)
- 제21권8호
- /
- Pages.1885-1896
- /
- 1996
- /
- 1226-4717(pISSN)
- /
- 2287-3880(eISSN)
ASIC을 이용한 자동영상 추적기 구현
Realization of automatic video tracker using ASIC
초록
This paper describes the implementation of the AVT(Automatic video Tracker) using ASIC. The basic tracking algorithm is based on the spatio-temporal gradient method, and adaptive window sizing, track state decision algorithm were also realized. Newly developed ASIC performs recursive image filtering, extraction of spatio-temporal gradient/gradient functions of image in field rate. Using the FPGA/ASIC, the tracker was simply realized in one board type which can be easily applied to various image system. We conformed ASIC operation by computer simulation and tested the system in real tracking situations. From the result, the system can track the moving target which has a velocity of 2-3 pixel/field and a size of varying from 2 to 128 pixes. Also fast refresh rateof motion estimation(60Hz) improves the characteristics of servoing system which forms feedback loop with the tracker.
키워드