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BikeReid

​本项目立足校园安防,聚焦于校园自行车的防盗追踪和自动预警,提供了实时,高效,隐私的BikeReid方案。

​我们基于yolox目标检测算法,以监控画面的画面帧作为输入,来实时识别-分割-追踪校园中正在骑行的自行车与自行车上的人。 ​

综合考量了监控分辨度低人像模糊,自行车特征信息不易提取、多机位拍摄带来的画面追踪困难等问题,我们训练了自己的人车重识别的工业级AI模型BikeReid,分离人车特征向量进行表征和度量学习,根据人的穿着、姿态与自行车纹理等特征完成识别分类任务,避免了传统的人脸识别方案带来的隐私问题。每帧的Reid计算生成特征向量平均仅需0.024s,完美完成了实时性的要求。BikeReid在rank10准确率上达到了79.53%,达到工业上部署要求。

​此外,我们建立一个Mysql数据库,用来存储各自行车与人的的配对、监控位置与时间戳等基本信息;而对于核心的查询预警功能,利用Milvus引擎针对海量的特征向量进行高速相似度查询。当发现全新的配对时,会将此配对及对应画面加入预警库,从而对自行车盗窃进行预警,并为找回被盗自行车提供便利。

​我们的预期使用场景是:当有学生自行车被盗时,数据库会自动发出预警信息,校方仅需查询一次即可获知所有疑似人车不匹配画面帧,选中后再次点击查询,即可显示此辆自行车在监控记录里所有历史人车配对图片,大幅减少查看监控的代价,从而提高寻找被盗自行车的效率。

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