Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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A High Speed Road Lane Detection based on Optimal Extraction of ROI-LB

관심영역(ROI-LB)의 최적 추출에 의한 차선검출의 고속화

  • Cheong, Cha-Keon (Dept. of system control Eng., College of Eng., Hoseo University)
  • 정차근 (호서대학교 공과대학 시스템제어공학과)
  • Published : 2009.03.30
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Abstract

This paper presents an algorithm, aims at practical applications, for the high speed processing and performance enhancement of lane detection base on vision processing system. As a preprocessing for high speed lane detection, the vanishing line estimation and the optimal extraction of region of interest for lane boundary (ROI-LB) can be processed to reduction of detection region in which high speed processing is enabled. Image feature information is extracted only in the ROI-LB. Road lane is extracted using a non-parametric model fitting and Hough transform within the ROI-LB. With simultaneous processing of noise reduction and edge enhancement using the Laplacian filter, the reliability of feature extraction can be increased for various road lane patterns. Since outliers of edge at each block can be removed with clustering of edge orientation for each block within the ROI-LB, the performance of lane detection can be greatly improved. The various real road experimental results are presented to evaluate the effectiveness of the proposed method.

본 논문에서는 실용화를 목적으로 비전 시스템을 기반으로 한 차선검출의 성능개선과 처리과정의 고속화 알고리즘을 제안한다. 차선검출의 고속화를 위해 전처리 과정으로 수평소실선의 추정과 관심영역(ROI-LB)의 최적 선정으로 획기적인 검출영역의 감소가 가능하다. 블록단위의 ROI-LB 내에서 영상의 특징정보를 추출하고 이를 기반으로 한 Hough 변환의 적용에 의한 nonparametric 모델 매칭 기법으로 차선을 검출한다. Laplacian 필터를 사용해서 잡음제거와 동시에 에지 보강 과정을 처리함으로서 다양한 차선 패턴에 대한 특징정보 추출의 신뢰성을 향상시킨다. 또한 ROI-LB 내 블록별 에지의 방향성 정보의 클러스터링으로 차선으로 오인식되는 에지들의 제거가 가능해 차선검출의 성능을 개선할 수 있다. 제안 방법의 유효성을 검증하기 위해 다양한 실제 차선 패턴을 대상으로 한 실험결과를 제시한다.

Keywords

References

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