【摘要】 针对现有限流设施与策略智能化程度不高,灵活性较差的问题,提出一种基于光流特征描述子的站点限流设施优化方法.首先,根据枢纽内场景特点,设置感兴趣区域(region of interest,ROI),从而降低后续操作的计算量,提高算法的执行效率;然后,在建立光流特征描述子的基础上,对图片序列进行特征分析;最后,基于人群聚集特征,对经典单分类支持向量机进行调整,并实现超负荷状态的检测.实验结果表明,提出的方法能够对站台人群状态进行准确检测,有效增强限流设施的自动化水平,为轨道交通站点客流组织与管理提供数据支撑和理论依据.更多还原

【Abstract】 To address the problem of low intelligence and flexibility of existing flow limiting facilities,a new optimization method for flow-limiting facilities in rail transit stations based on optical feature descriptors, is proposed. First,the region of interest( ROI) is set according to the scene characteristics of rail transit stations to reduce the computation of subsequent operation. Then,the features of image sequence are analyzed by establishing optical feature descriptors. Finally,the one-class SVM is adjusted according to the clumped features of pedestrians to make condition detection possible. Experimental results demonstrate that the proposed method can detect the overload status accurately,improve the automatic level of flow-limiting facilities effectively,and provides data support and theoretical basis for organization and management of pedestrians in rail transit stations.更多还原