![安全文档尤其是纸币的认证](/CN/2010/8/7/images/201080035891.jpg)
基本信息:
- 专利标题: 安全文档尤其是纸币的认证
- 专利标题(英):Authentication of security documents, in particular of banknotes
- 申请号:CN201080035891.4 申请日:2010-08-11
- 公开(公告)号:CN102473329A 公开(公告)日:2012-05-23
- 发明人: 斯蒂芬·格洛克 , 欧根·吉利赫 , 约翰尼斯·乔格·谢德 , 沃尔克·洛韦格
- 申请人: 卡巴-诺塔赛斯有限公司
- 申请人地址: 瑞士洛桑市
- 专利权人: 卡巴-诺塔赛斯有限公司
- 当前专利权人: 卡巴-诺塔赛斯有限公司
- 当前专利权人地址: 瑞士洛桑市
- 代理机构: 北京安信方达知识产权代理有限公司
- 代理人: 周靖; 郑霞
- 优先权: 09167609.8 2009.08.11 EP
- 国际申请: PCT/IB2010/053638 2010.08.11
- 国际公布: WO2011/018764 EN 2011.02.17
- 进入国家日期: 2012-02-13
- 主分类号: G07D7/20
- IPC分类号: G07D7/20 ; G07D7/00 ; G06F17/14
There is described a method for checking the authenticity of security documents, in particular banknotes, wherein authentic security documents comprise security features (41-49; 30; 10; 51, 52) printed, applied or otherwise provided on the security documents, which security features comprise characteristic visual features intrinsic to the processes used for producing the security documents. The method comprises the step of digitally processing a sample image of at least one region of interest (R. o. I.) of the surface of a candidate document to be authenticated, which region of interest encompasses at least part of the security features, the digital processing including performing a decomposition of the sample image by means of wavelet transform (WT) of the sample image.; Such decomposition of the sample image is based on a wavelet packet transform (WPT) of the sample image, preferably a so-called two-dimensional shift invariant WPT (2D-SIWPT).
公开/授权文献:
- CN102473329B 安全文档尤其是纸币的认证 公开/授权日:2014-08-27
IPC结构图谱:
G | 物理 |
--G07 | 核算装置 |
----G07D | 硬币的分类、检验、兑换、交付或其他处理;检验或兑换纸币;检验证券、债券或类似的有价纸币 |
------G07D7/00 | 检验纸币、证券、债券或类似的有价纸币的真实性 |
--------G07D7/20 | .检验其上的图案 |