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A study on the real time obstacle recognition by scanned line image

스캔라인 연속영상을 이용한 실시간 장애물 인식에 관한 연구

  • Cheung, Sheung-Youb (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Oh, Jun-Ho (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 정성엽 (한국과학기술원 기계공학과) ;
  • 오준호 (한국과학기술원 기계공학과)
  • Published : 1997.10.01

Abstract

This study is devoted to the detection of the 3-dimensional point obstacles on the plane by using accumulated scan line images. The proposed accumulating only one scan line allow to process image at real time. And the change of motion of the feature in image is small because of the short time between image frames, so it does not take much time to track features. To obtain recursive optimal obstacles position and robot motion along to the motion of camera, Kalman filter algorithm is used. After using Kalman filter in case of the fixed environment, 3-dimensional obstacles point map is obtained. The position and motion of moving obstacles can also be obtained by pre-segmentation. Finally, to solve the stereo ambiguity problem from multiple matches, the camera motion is actively used to discard mis-matched features. To get relative distance of obstacles from camera, parallel stereo camera setup is used. In order to evaluate the proposed algorithm, experiments are carried out by a small test vehicle.

Keywords

Computer Vision;Stereo Image;Scanned Line Image;Obstacle Detection;Real Time Image Processing;Multiple Matching;Kalman Filter

References

  1. In Proc. IEEE, Trans. Pattern Analysis and Machine Intelligence v.16 no.10 Matching Point Features with Ordered Geometric, Rigidity, and Disparity Constraints Xiaoping Hu;Narendra Ahuja
  2. Stochastic Modelds, Estimation and control Peter S. Meyback
  3. Three Dimensional Computer Vision Oliver Faugeras
  4. Dynamic Stereo Vision Larry Matthies
  5. In Proc. IEEE v.71 no.7 The Stanford Cart and the CMU Rover Hans P. Moravec
  6. Robotics v.12 A Stereo Vision-based Obstacle Detecting Method for Mobile Robot Navigation Cho Yong C.;Cho, Hyung S
  7. Optical Flow를 이용한 3차원거리 정보 추출에 관한 연구 이재웅
  8. 대한기계학회논문집 v.19 no.4 레이저거리계를 이용한 자율주행로봇의 국부경로 계획 알고리듬 차영엽;권대갑
  9. In Proc. IEEE. Int. Conf. on Intelligent Robots and Systems v.26-30 Visual Detection of Distant Objects Ulrich Solder;Volker Graefe
  10. Int. Journal of Computer Vision v.1 Epipolar-Plane Image Analysis:An Approach to Determining Structure from Motion Robert C. Bolles;Harlyn Baker;David H. Marimont
  11. 실시간 시각 정보처리기능을 갖는 지능형 이동 로봇에 관한 연구 정지윤
  12. 이동로봇 실내 운항을 위한 다중 센서를 이용한 모델 작성기법에 대한 연구 윤동수
  13. 영상 축소와 분산처리를 이용한 이동로봇의 실시간 영상처리 김성호
  14. Visual Collision Avoidance by Segmentation Ian Horswill