基于地面参考系的视频测速方法
发布时间：2018-12-15 04:35
【摘要】：通过对目前常用的传统视频测速的基本原理的分析,提出了一种基于地面参考系的视频图像测速方法。分析了摄像机的标定误差和车速检测误差,并提出了减小误差的解决方案。以地面网格为固定参考系对摄像机进行标定,提高了摄像机标定精度,减少了速度检测误差。利用再标定的摄像机去抖动方法,有效的消除了摄像机抖动带来的测量误差。实验结果表明,以地面网格为固定参考系的摄像机标定误差为1%,系统测速误差为1%。基于地面参考系的视频测速方法,过程简单,计算量小且测速精度高,很好地满足了车辆视频图像测速系统的要求。
[Abstract]:Based on the analysis of the basic principles of traditional video velocimetry, a method of video image velocimetry based on ground reference system is proposed. The calibration error and the speed measurement error of the camera are analyzed, and the solution to reduce the error is put forward. The camera is calibrated with ground grid as a fixed reference system, which improves the accuracy of camera calibration and reduces the error of speed detection. The measurement error caused by camera jitter is effectively eliminated by using the camera de-jitter method. The experimental results show that the camera calibration error is 1 and the system velocity measurement error is 1 with the ground grid as the fixed reference system. The video velocimetry method based on ground reference system has the advantages of simple process, small computation and high accuracy, which can meet the requirements of vehicle video image speed measurement system.
【作者单位】： 宁波大学信息科学与工程学院;
【基金】：浙江省教育厅科研项目(Y201121170) 宁波市自然科学基金项目(2012A610042)
【分类号】：TP391.41;U495
本文编号：2379988
[Abstract]:Based on the analysis of the basic principles of traditional video velocimetry, a method of video image velocimetry based on ground reference system is proposed. The calibration error and the speed measurement error of the camera are analyzed, and the solution to reduce the error is put forward. The camera is calibrated with ground grid as a fixed reference system, which improves the accuracy of camera calibration and reduces the error of speed detection. The measurement error caused by camera jitter is effectively eliminated by using the camera de-jitter method. The experimental results show that the camera calibration error is 1 and the system velocity measurement error is 1 with the ground grid as the fixed reference system. The video velocimetry method based on ground reference system has the advantages of simple process, small computation and high accuracy, which can meet the requirements of vehicle video image speed measurement system.
【作者单位】： 宁波大学信息科学与工程学院;
【基金】：浙江省教育厅科研项目(Y201121170) 宁波市自然科学基金项目(2012A610042)
【分类号】：TP391.41;U495
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1 华艳秋;沥青路面行车性能检测摄像机标定技术研究[D];武汉理工大学;2006年
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，本文编号：2379988
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