반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

능동 카메라 기반의 물체 추적 제어기 설계

Controller Design for Object Tracking with an Active Camera

  • 윤수진 (삼성전자 영상디스플레이사업부) ;
  • 최군호 (한국기술교육대학교 정보미디어연구소)
  • Youn, Su-Jin (Visual Display Division, Samsung Electronics) ;
  • Choi, Goon-Ho (IT & Media Research Center, Korea Univ. of Technology and Education)
  • 투고 : 2011.02.25
  • 심사 : 2011.03.15
  • 발행 : 2011.03.31
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초록

In the case of the tracking system with an active camera, it is very difficult to guarantee real-time processing due to the attribute of vision system which handles large amounts of data at once and has time delay to process. The reliability of the processed result is also badly influenced by the slow sampling time and uncertainty caused by the image processing. In this paper, we figure out dynamic characteristics of pixels reflected on the image plane and derive the mathematical model of the vision tracking system which includes the actuating part and the image processing part. Based on this model, we find a controller that stabilizes the system and enhances the tracking performance to track a target rapidly. The centroid is used as the position index of moving object and the DC motor in the actuating part is controlled to keep the identified centroid at the center point of the image plane.

키워드

참고문헌

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