尚文, 马旭东, 戴先中, 王栋耀. 基于视觉的移动机器人地面轨线跟踪导航研究[J]. 机器人, 2003, 25(5): 432-437..
SHANG Wen, MA Xu-dong, DAI Xian-zhong, WANG Dong-yao. RESEARCH ON VISION-GUIDED ROBOT NAVIGATION BY TRACKING TRAJECTORY. ROBOT, 2003, 25(5): 432-437..
Abstract:Trajectory tracking on the ground is an elementary technique in vision guided robot systems.In this paper a novel state based control approach is proposed for tracking trajectory whose curvature changes greatly.Input of the state based tracking control is achieved by extracting reference trajectory direction and amplitude parameters from vision images,and the tracking control is realized by regulating translational and rotational velocity for output.In order to improve the control performance,when the image distortion is too large resulting from camera obliquity,these parameters are transformed from image coordinate to robot coordinate through projective transformation,while parameters such as position and curvature are not necessarily provided.Experimental results demonstrate the validity of the approach.
[1] 夏良正.数字图像处理[M].东南大学出版社,1999. [2] 马颂德,张正友.计算机视觉-计算理论与算法基础[M].科学出版社,1998. [3] 王荣本,徐友春等.基于线性模型的导航路径图像检测算法研究[J].公路交通科技,2001.4. [4] 徐友春,王荣本等.一种机器视觉导航的智能车辆转向控制模型设计[J].中国公路学报,2001.7. [5] 周俊,姬长英.基于视觉导航的轮式移动机器人横向最优控制[J].机器人,2002,24(3):209-212. [6] Baumgartner E T,Skaar S B.An autonomous vision-based mobile robot[J].IEEE Transactions on Automatic Control,1994,39(3):493-502. [7] Cox I J.Blanche-An experiment in guidance and navigation of an autonomous robot vehicle[J].IEEE Transactions on Robotics and Automation,1991,7(2):193-204. [8] Gaspar J,Winters N,Santos-Victor J.Vision-based navigation and environmental representations with an omnidirectional camera[J].IEEE Transactions on Robotics and Automation,2000,16(6):890-898. [9] Kanayama Y,Nilpour A,Lelm C.A locomotion control method for autonomous vehicles[A].IEEE International Conference on Robotics and Automation[C].1988:1315-1317.