计算机应用研究2013，Vol.30Issue(4)：1219-1222,1233,5.DOI:10.3969/j.issn.1001-3695.2013.04.070
光流法在机车安全行驶中的应用
Application of optical flow in locomotive safe driving
摘要
Abstract
In the video-based locomotive safe driving assistant system, reducing the detecting region of signal light according to the location of rails and some prior knowledge can improve the efficiency and reliability of signal light detection. But it possibly fails to detect rail in some complicated illumination environments (especially in the night) , and the signal light detecting region cannot be available. To solve this problem, this paper proposed an optical flow based approach for signal light region prediction. Firstly, it got the strong corners in region of interest by KLT operators, and calculated their optical-flow using Lu-cas-Kanade method with pyramids. After that it could get the locomotive turning state from the optical flow statistical information. In the end, it could dynamically estimate the signal light region according to the turning states and prior knowledge. Besides , it also proposed a method for rails false-tracking detecting by utilizing locomotive turning states, which could detect the tracking error timely and arouse the rails relocation. Experimental results demonstrate that the proposed method can estimate the signal region effectively and make the signal detection more real-time and more robust against disturbance.关键词
信号灯检测/区域预测/光流法/转向状态/跟踪检错Key words
signal light detection/ region prediction/ optical flow/ locomotive turning state/ rails false-tracking detection分类
信息技术与安全科学引用本文复制引用
严强,黄增喜,曹丽萍,黄蓉刚..光流法在机车安全行驶中的应用[J].计算机应用研究,2013,30(4):1219-1222,1233,5.基金项目
国家自然科学基金资助项目(61173182,61179071) （61173182,61179071）
四川省应用基础项目(2011JY0124) （2011JY0124）
四川省国际科技合作与交流研究计划资助项目(2012HH0004) （2012HH0004）
四川省科技创新苗子工程(2011021) （2011021）
