Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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An Adaptive Road ROI Determination Algorithm for Lane Detection

차선 인식을 위한 적응적 도로 관심영역 결정 알고리즘

  • Lee, Chanho (School of Electronic Engr., Soongsil University) ;
  • Ding, Dajun (School of Electronic Engr., Soongsil University)
  • 이찬호 (숭실대학교 정보통신전자공학부) ;
  • 정대균 (숭실대학교 정보통신전자공학부)
  • Received : 2013.08.04
  • Published : 2014.01.25
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Abstract

Road conditions can provide important information for driving safety in driving assistance systems. The input images usually include unnecessary information and they need to be analyzed only in a region of interest (ROI) to reduce the amount of computation. In this paper, a vision-based road ROI determination algorithm is proposed to detect the road region using the positional information of a vanishing point and line segments. The line segments are detected using Canny's edge detection and Hough transform. The vanishing point is traced by a Kalman filter to reduce the false detection due to noises. The road ROI can be determined automatically and adaptively in every frame after initialization. The proposed method is implemented using C++ and the OpenCV library, and the road ROIs are obtained from various video images of black boxes. The results show that the proposed algorithm is robust.

운전자 보조 시스템에서 도로 상태 정보는 안전한 운전을 위한 중요한 정보를 제공한다. 자동차에서의 입력 영상은 일반적으로 불필요한 영역도 포함하므로 도로 상태를 파악을 위한 관심영역(ROI)을 결정하고 나머지 영역을 제거한 뒤 관심영역만 남겨 두면 연산 시간을 줄일 수 있다. 본 논문에서는 도로를 나타내는 특징적인 선분과 이로부터 얻어지는 소멸점을 이용하여 도로 영역을 찾는 영상기반의 도로 관심영역 결정 알고리즘을 제안한다. 선분들은 Canny 가장자리 탐지법과 허프 변환을 이용하여 찾고 소멸점은 칼만 필터를 이용하여 추적함으로써 잡음의 영향에 의한 오동작을 방지한다. 초기화 과정을 거치면 도로 관심영역을 매 프레임마다 정확히 결정할 수 있다. 제안한 방식은 C++와 OpenCV 라이브러리를 이용하여 SW로 구현하였으며 다양한 블랙박스 영상으로부터 도로 관심영역을 얻는데 성공하였다. 실험 결과 제안한 알고리즘은 잡음에 강하다는 것을 확인하였다.

Keywords

References

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