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교통 환경 분석을 위한 움직임 기반 배경영상 추출

Motion-Based Background Image Extraction for Traffic Environment Analysis

  • Oh, Jeong-Su (Department of Image Science & Engineering, Pukyong National University)
  • 투고 : 2013.04.12
  • 심사 : 2013.05.30
  • 발행 : 2013.08.31

초록

본 논문은 스쿨존 영역의 교통 환경 분석을 위한 배경영상 추출 알고리즘을 제안하고 있다. 제안된 알고리즘은 교통 환경에서 수시로 발생되는 밝기 변화와 정지 객체에 의한 문제를 해결하고 있다. 전자를 위해 고속 Sigma-Delta 알고리즘을 이용해 배경영상을 현 프레임으로 고속 갱신하고, 후자를 위해 직전 프레임과 오랜 시간의 평균 배경영상을 이용해 동적 영역을 검출하여 정지 객체를 배경영상에서 배제한다. 실험 결과 제안된 알고리즘은 기존 알고리즘들과 비교하여 밝기 변화에 빠르게 잘 적응하고 있고, 배경영역의 SAD (Sum of Absolute Differences)를 약40~80% 정도를 줄여주고 있다.

This paper proposes a background image extraction algorithm for traffic environment analysis in a school zone. The proposed algorithm solves the problems by level changes and stationary objects to be occurred frequently in traffic environment. For the former, it renews rapidly the background image toward the current frame using a fast Sima-Delta algorithm and for the latter, it excludes the stationary objects from the background image by detecting dynamic regions using a just previous frame and a background image averaged for a long time. The results of experiments show that the proposed algorithm adapts quickly itself to level change well, and reduces about 40~80% of SAD in background region in comparison with the conventional algorithms.

키워드

참고문헌

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