公开(公告)号：CA2899868C

公开(公告)日：2019-12-31

申请号：CA2899868

申请日：2014-02-04

Applicant: KBA NOTASYS SA

Inventor： LOHWEG VOLKER ,  HOFFMANN JAN LEIF ,  DORKSEN HELENE ,  HILDEBRAND ROLAND ,  GILLICH EUGEN ,  HOFMANN JURG ,  SCHAEDE JOHANNES GEORG

IPC: G07D7/20

Abstract: 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.

公开(公告)号：AU2014210743A1

公开(公告)日：2015-07-30

申请号：AU2014210743

申请日：2014-02-04

Applicant: KBA NOTASYS SA

Inventor： LOHWEG VOLKER ,  HOFFMANN JAN LEIF ,  DORKSEN HELENE ,  HILDEBRAND ROLAND ,  GILLICH EUGEN ,  HOFMANN JURG ,  SCHAEDE JOHANNES GEORG

IPC: G07D7/00 ,  G07D7/20

Abstract: 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.

公开(公告)号：AU2010283454B2

公开(公告)日：2014-08-07

申请号：AU2010283454

申请日：2010-08-11

Applicant: KBA NOTASYS SA

Inventor： GLOCK STEFAN ,  GILLICH EUGEN ,  SCHAEDE JOHANNES GEORG ,  LOHWEG VOLKER

IPC: G07D7/20 ,  G06F17/14 ,  G07D7/00

Abstract: 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(公告)号：NZ597790A

公开(公告)日：2013-09-27

申请号：NZ59779010

申请日：2010-08-11

Applicant: KBA NOTASYS SA

Inventor： LOHWEG VOLKER ,  SCHAEDE JOHANNES GEORG ,  GLOCK STEFAN ,  GILLICH EUGEN

IPC: G07D7/20 ,  G06F17/14 ,  G07D7/00

Abstract: A method and a device for checking the authenticity of security documents are disclosed. The 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 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 includes performing a decomposition of the sample image by means of wavelet transform of the sample image and extracting classifying features from the decomposition of the sample image and deriving an authenticity rating of the candidate document based on the extracted classifying features. The decomposition of the sample image is based on an incomplete wavelet packet transform of the sample image and includes decomposition of the sample image into a wavelet packet tree comprising at least one approximation node and detail nodes and looking for the detail node within the wavelet packet tree that has the highest information content.

公开(公告)号：ZA201200588B

公开(公告)日：2013-05-29

申请号：ZA201200588

申请日：2012-01-24

Applicant: KBA-NOTASYS SA

Inventor： GLOCK STEFAN ,  GILLICH EUGEN ,  SCHAEDE JOHANNES GEORG ,  LOHWEG VOLKER

IPC: G07D20060101 ,  G06F20060101

Abstract: 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(公告)号：NZ581538A

公开(公告)日：2012-08-31

申请号：NZ58153808

申请日：2008-06-02

Applicant: KBA NOTASYS SA

Inventor： LOHWEG VOLKER ,  GILLICH EUGEN ,  SCHAEDE JOHANNES

IPC: G07D7/20 ,  G07D7/00

Abstract: Disclosed is a method for checking the authenticity of security documents using characteristic visual features intrinsic to the processes used for producing the security documents. Authentic security documents comprise security features printed, applied or otherwise provided on the security documents. The authentication method is performed by acquiring a sample image of at least one region of interest of the surface of a candidate document to be authorised. The region of interest is selected to encompass at least part of the security features. The sample image is then digitally processed by performing a decomposition of the image into at least one scale sub-space containing high resolution details of the sample image. Classifying features are then extracted from the scale sub-space. These extracted classifying features are used to derive an authenticity rating of the candidate document.

公开(公告)号：ES2364503T3

公开(公告)日：2011-09-05

申请号：ES07713112

申请日：2007-03-08

Applicant: KBA NOTASYS SA

Inventor： SCHAEDE JOHANNES GEORG ,  LOHWEG VOLKER ,  STOEBER BERND ,  SCHWITZKY VOLKMAR ,  HOIER GUENTHER

IPC: B41F33/00

Abstract: Un sistema de inspección de hojas de una prensa de imprimir por ambas caras con alimentación de hojas, del tipo que comprende dos cilindros de impresión (10, 20) para realizar la impresión simultáneamente por ambas caras de las hojas, que se caracteriza porque el citado sistema de inspección de hojas comprende al menos un primer dispositivo de inspección (100) para tomar una imagen de una primera cara de las hojas impresas, que se caracteriza porque el citado primer dispositivo de inspección (100) comprende un primer sensor de imágenes por líneas (110) para la realización de la adquisición de imágenes por escaneado por líneas de la citada primera cara de las hojas impresas, y el citado primer dispositivo de inspección (100) está dispuesto de tal manera que el citado primer sensor de imágenes por líneas (110) adquiere una imagen de una hoja impresa mientras la citada hoja impresa se encuentra adherida todavía a la superficie de un primero (10) de los citados dos cilindros de imprimir (10, 20) e inmediatamente antes de que la citada hoja impresa se transfiera a un sistema agarrador de cadenas (5) de la prensa de imprimir.

公开(公告)号：PL2951791T3

公开(公告)日：2019-10-31

申请号：PL14706112

申请日：2014-02-04

Applicant: KBA NOTASYS SA

Inventor： LOHWEG VOLKER ,  HOFFMANN JAN LEIF ,  DÖRKSEN HELENE ,  HILDEBRAND ROLAND ,  GILLICH EUGEN ,  HOFMANN JÜRG ,  SCHAEDE JOHANNES GEORG

IPC: G07D7/00 ,  G07D7/20

公开(公告)号：CA2768723C

公开(公告)日：2018-03-06

申请号：CA2768723

申请日：2010-08-11

Applicant: KBA NOTASYS SA

Inventor： GLOCK STEFAN ,  GILLICH EUGEN ,  SCHAEDE JOHANNES GEORG ,  LOHWEG VOLKER

IPC: G07D7/20 ,  G06F17/14

Abstract: 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(公告)号：CA2768723A1

公开(公告)日：2011-02-17

申请号：CA2768723

申请日：2010-08-11

Applicant: KBA NOTASYS SA

Inventor： GLOCK STEFAN ,  GILLICH EUGEN ,  SCHAEDE JOHANNES GEORG ,  LOHWEG VOLKER

IPC: G07D7/20 ,  G06F17/14 ,  G07D7/00

Abstract: 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)