The invention discloses a system and a method for detecting a signal state of a signal lamp by analyzing an image obtained by shooting the signal lamp, and relates to the field of state detection of the signal lamp. The signal state detection system of the signal lamp comprises an image shooting device, an image analysis device and a signal state prediction device. The image shooting device respectively shoots image signals P1-Pn at the time points t1-tn according to the time sequence; the image analysis device analyzes the image signals P1-Pn, and preliminarily detects the detection signal states ST1-STn of the signal lamp at the time points t1-tn; the signal state prediction device calculates an assumed prediction accuracy AFn at which an actual signal state is each of a plurality of signal states at a time point tn on the basis of switching information for the plurality of signal states, a detected signal state, and detection accuracy rates AT1-ATn for the detected signal state, predicts the maximum signal state in the assumed prediction accuracy AFn as the predicted signal state SPn at the time point tn, and set the maximum assumed prediction accuracy AFn as the predicted accuracy APn at the time point tn.
本发明公开了一种通过解析拍摄信号灯所得到的图像来检测信号灯的信号状态的系统及方法,涉及信号灯的状态检测领域。信号灯的信号状态检测系统包括图像拍摄装置、图像解析装置和信号状态预测装置;图像拍摄装置按时间先后分别拍摄时间点t1~tn的图像信号P1~Pn;图像解析装置对图像信号P1~Pn进行解析,初步检测出信号灯在时间点t1~tn的检测信号状态ST1~STn;信号状态预测装置基于多种信号状态的切换信息、检测信号状态以及检测信号状态的检测准确率AT1~ATn,计算出在时间点tn实际信号状态为多种信号状态中的每一种的假定预测准确率AFn,并将假定预测准确率AFn中最大的信号状态预测为时间点tn的预测信号状态SPn,并将该最大的假定预测准确率AFn定为时间点tn的预测准确率APn。
Signal state detection system and method of signal lamp
一种信号灯的信号状态检测系统及方法
2021-09-10
Patent
Electronic Resource
Chinese
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