| 单幅轨距图像中轨道特征识别与定位方法研究 |
| |
| 引用本文： | 郭保青,许西宁,余祖俊.单幅轨距图像中轨道特征识别与定位方法研究[J].电子测量与仪器学报,2011,25(4):309-314. |
| |
| 作者姓名： | 郭保青 许西宁 余祖俊 |
| |
| 作者单位： | 北京交通大学机械与电子控制工程学院; |
| |
| 基金项目： | 国家“863”高技术研究发展计划重大项目子课题(编号:0912JJ0104-ZH00-H-HZ-002-20100105)资助项目 |
| |
| 摘 要： | 针对里程计进行列车定位时存在的累积误差,通过列车前方安装的姿态固定的高速相机获取轨道图像,根据直线区段左右钢轨轨距为常数的特征,提出了一种利用图像处理进行轨道特征识别和定位的累积误差校正方法。针对一般的图像处理方法计算量大的弊端,提出了利用轨道灰度投影提取轨道特征生成候选轨道集合,利用Hough变换快速验证轨道真实性的方法。对于提取的轨道特征,提出了基于轨距常数的特征点真实位置计算方法。实验证明该方法能够快速有效地提取轨道特征,定位精度能够达到0.25 m以内,适用于里程计累积误差的校正。
|
| 关 键 词： | 列车定位 轨距 灰度投影 Hough变换 单幅图像 |
Research on recognition and positioning method of rail landmark in single gauge image |
| |
| Guo Baoqing,Xu Xining,Yu Zujun.Research on recognition and positioning method of rail landmark in single gauge image[J].Journal of Electronic Measurement and Instrument,2011,25(4):309-314. |
| |
| Authors: | Guo Baoqing Xu Xining Yu Zujun |
| |
| Affiliation: | Guo Baoqing Xu Xi'ning Yu Zujun (School of Mechanical and Electronic Control Engineering,Beijing Jiaotong University,Beijing 100044,China) |
| |
| Abstract: | There is accumulative increasing error for train positioning with odometer.In order to address this issue,a new accumulative error correction method based on gauge constant is proposed,which recognizes and positions rail landmarks(such as switch frogs) by image process.For rail image capture,a high speed camera is installed on the top of locomotive with fixed height and pose.The distance between rail landmark and camera is calculated with landmark coordinates in image.Not like huge calculation load of norma... |
| |
| Keywords: | train location gauge gray projection Hough transform single image |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
