The invention belongs to the technical field of vehicle feature extraction, and discloses an expressway vehicle unique identification feature extraction method and system. The expressway vehicle unique identification feature extraction system comprises a video data acquisition module, a data preprocessing module, a central control module, a feature extraction model construction module, a model training module, an identification feature extraction module, a feature fusion module, a vehicle identification module, a cloud storage module and an update display module. According to the invention, the feature extraction model is trained through the deep learning network framework, and the feature extraction capability of the network model in different aspects can be improved according to different loss functions of joint training in different stages; the feature vectors, the vehicle attribute feature vectors and the expressive features are jointly used for vehicle re-identification, so that the accuracy of vehicle identification can be improved; and the sequential progressive matching mode can shorten the retrieval time under the condition of ensuring high precision, and the invention issuitable for vehicle re-identification of large data volume.

    本发明属于车辆特征提取技术领域,公开了一种高速公路车辆唯一标识特征提取方法及系统,所述高速公路车辆唯一标识特征提取的系统包括:视频数据获取模块、数据预处理模块、中央控制模块、特征提取模型构建模块、模型训练模块、标识特征提取模块、特征融合模块、车辆识别模块、云存储模块、更新显示模块。本发明通过深度学习网络框架对特征提取模型进行训练,在不同阶段根据使用联合训练的损失函数不同,能够提升网络模型的在不同方面的特征提取能力;通过特征向量、车辆属性特征向量与表述性特征共同用于车辆重识别,可以提高车辆识别的准确性;依次递进匹配的方式则在保证高精度的情况下还可以缩短检索时间,适用于大数据量的车辆重识别。


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    Title :

    Expressway vehicle unique identification feature extraction method and system


    Additional title:

    一种高速公路车辆唯一标识特征提取方法及系统


    Contributors:
    TAO JIE (author) / ZHENG YUHAI (author) / QI LING (author) / YU FENG (author) / HU DAN (author) / ZHAO HENG (author)

    Publication date :

    2020-12-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06K Erkennen von Daten , RECOGNITION OF DATA / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen



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