发明名称 |
AUTHENTICATION OF SECURITY DOCUMENTS AND MOBILE DEVICE TO CARRY OUT THE AUTHENTICATION |
摘要 |
A method of authenticating security documents and a mobile device, especially a smartphone, programmed to carry out the method, based on an analysis of features which are produced by intaglio printing, which analysis involves a decomposition of sample images of a candidate document to be authenticated based on Wavelets, each sample image being digitally processed by performing a Wavelet transform of the sample image in order to derive a set of classification features. The method is based on an adaptive approach, which includes the following steps : - prior to carrying out the Wavelet transform, defining a categorization map containing local information about different intaglio line structures that are found on the security documents; - carrying out a Wavelet selection amongst a pool of Wavelet types based on the categorization map; and - performing the Wavelet transform of the sample image on the basis of the selected Wavelet. |
申请公布号 |
WO2014118763(A1) |
申请公布日期 |
2014.08.07 |
申请号 |
WO2014IB58776 |
申请日期 |
2014.02.04 |
申请人 |
KBA-NOTASYS SA |
发明人 |
LOHWEG, VOLKER;HOFFMANN, JAN, LEIF;DÖRKSEN, HELENE;HILDEBRAND, ROLAND;GILLICH, EUGEN;HOFMANN, JÜRG;SCHAEDE, JOHANNES, GEORG |
分类号 |
G07D7/00;G07D7/20 |
主分类号 |
G07D7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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