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《Journal of Shaanxi University of Technology(Natural Science Edition)》 2012-06
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The instantaneous stop delay detection based on DSP

RAN Qi-wu1,YANG Jian-guo2,DUAN Chong-xiu2(1.School of Electrical Engineering,Shaanxi University of Tecnology, Hanzhong 723003,China; 2.School of Electrical Engineering,Xi′an Jiaotong University, Xi′an 710049,China)  
A set of embedded system based on the DSP is developed to realize the detection algorithm of instantaneous stopped delay and achieve the total amount of instantaneous stopped delay of each frame in the continuous video stream.Two methods are used to test the reliability of system.One method is that the artificial visual value is regarded as the criterion to validate the detection results of embedded system using the experimental data of 80 signal cycles,and the results show that the relative error of 77.5% instantaneous stopped delay extreme points is less than 12.5%,the 88.75% deviation of reaching the instantaneous stopped delay extreme points between the machine measured data and visual data is within 4s;the other is that the system′s various functions are evaluated by the observer through the questionnaire survey,and the results show that the curve of instantaneous stopped delay is basically consistent with that of the observed results.It shows that the system can accurately obtain the total amount of instantaneous stopped delay in traffic scene.
【Fund】: 国家自然科学基金资助项目(50522204)
【CateGory Index】: TP391.41;TP368.12
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