Journal of the Institute of Electronics Engineers of Korea SP (대한전자공학회논문지SP)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Detection of Road Lane with Color Classification and Directional Edge Clustering

칼라분류와 방향성 에지의 클러스터링에 의한 차선 검출

  • 정차근 (호서대학교 시스템제어공학과)
  • Received : 2011.03.08
  • Accepted : 2011.05.02
  • Published : 2011.07.25
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Abstract

This paper presents a novel algorithm to detect more accurate road lane with image sensor-based color classification and directional edge clustering. With treatment of road region and lane as a recognizable color object, the classification of color cues is processed by an iterative optimization of statistical parameters to each color object. These clustered color objects are taken into considerations as initial kernel information for color object detection and recognition. In order to improve the limitation of object classification using the color cues, the directional edge cures within the estimated region of interest in the lane boundary (ROI-LB) are clustered and combined. The results of color classification and directional edge clustering are optimally integrated to obtain the best detection of road lane. The characteristic of the proposed system is to obtain robust result to all real road environments because of using non-parametric approach based only on information of color and edge clustering without a particular mathematical road and lane model. The experimental results to the various real road environments and imaging conditions are presented to evaluate the effectiveness of the proposed method.

본 논문에서는 칼라분류 및 방향성 에지정보의 클러스터링과 이들의 통합에 의한 새로운 도로영역 및 차선검출 알고리즘을 제안한다. 도로영역 및 차선을 하나의 인식대상 물체로 취급하고, 통계적 파라미터의 반복 최적화에 의한 칼라정보의 클러스터링을 수행해서 검출과 인식을 위한 초기정보로 사용한다. 다음으로, 칼라정보가 갖는 물체인식 의 한계를 개선하기 위해 에지정보를 검출하고, 관심영역(Region Of Interest for Lane Boundary(ROI-LB))의 추출과 ROI-LB 영역에서 방향성 에지정보의 검출과 클러스터링을 수행한다. 칼라분류 및 에지 클러스터링의 결과를 통합해, 이들 각각의 정보가 갖는 특징을 이용함으로서 도로환경에 적합한 도로영역 및 차선을 검출할 수 있도록 한다. 제안방법은 도로와 차선에 관한 파라미터릭 수학적 모델을 사용하지 않고 칼라 및 에지의 클러스터링 정보에 의한 non-parametric 방법으로 다양한 도로 환경에 유연한 대응이 가능한 장점을 갖는다. 본 제안방법의 유효성을 입증하기 위해 상이한 촬상조건 및 도로환경에서의 영상에 대한 실험결과를 제시한다.

Keywords

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