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Method and device for license plate positioning

机译:车牌定位的方法和装置

摘要

Embodiments of the present application provide a license plate location method and apparatus. The method includes: acquiring a to-be-located license plate image; sending the to-be-located license plate image to a target network for license plate location; wherein, the target network comprises a feature extraction layer and a regression layer; extracting, by the feature extraction layer, a feature value of the to-be-located license plate image, and sending the feature value to the regression layer; acquiring a combination of a license plate frame area and a license plate character area, which is obtained by the regression layer based on the feature value; and determining a license plate area of the to-be-located license plate image based on a location area corresponding to the acquired combination. The target network is pre-trained by sample license plate images; the sample license plate images include positive sample license plate images, and the positive sample license plate images include combinations of license plate frame areas and license plate character areas. With the technical solutions according to embodiments of the present application, the accuracy of the license plate location can be improved.
机译:本申请的实施例提供了牌照定位方法和装置。该方法包括:获取待位的牌照图像;将待定位的牌照图像发送到目标网络以进行牌照位置;其中,目标网络包括特征提取层和回归层;通过特征提取层提取待位牌照图像的特征值,并将特征值发送到回归层;获取基于特征值的回归层获得的牌照框架区域和牌照字符区域的组合;基于对应于获取的组合对应的位置区域确定待位牌照图像的牌照区域。目标网络是通过示例牌照图像预先培训的;样品牌照图像包括正样品牌照图像,并且正样的牌照图像包括牌照框架区域和车牌字符区域的组合。利用根据本申请实施例的技术解决方案,可以提高牌照位置的精度。

著录项

  • 公开/公告号US11126882B2

    专利类型

  • 公开/公告日2021-09-21

    原文格式PDF

  • 申请/专利权人 HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO. LTD.;

    申请/专利号US201716473787

  • 发明设计人 XIAOHUI CAI;

    申请日2017-10-18

  • 分类号G06K9/32;G06K9/46;G06F17/18;G06K9/62;G06K9/34;

  • 国家 US

  • 入库时间 2022-08-24 21:09:17

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