The present invention relates to the technical field of optical detection of the authenticity or non-authenticity of visual items Particularly, the invention relates to the technical field of respectively encryption methods and authentication methods of a digital representation of a visual item using respectively an encryption device and an authentication device.

A method of verifying, by a processing system, whether a user of a device corresponds to a previously authenticated user. The processing system has access to a first image and a second image. The first image is an image of an identity document comprising an image of the previously authenticated user. The second image is an image captured by the device. The method comprises: comparing said first image to said second image, whereby to determine whether they are images of the same user; and, in the event that it is determined that the first and second images are images of the same user: designating one of the first and second images as a higher quality image; and, storing said designated image as a validated image of the previously authenticated user.

Various embodiments herein each include at least one of systems, methods, and software that assists in identification of a source of an unauthorized disclosure of a document, such as a public disclosure of check, receipt, or other document type. One method embodiment includes receiving a request for a stored document image from a requestor and retrieving the requested stored document image. This method may then apply a parameterized image deformation algorithm according to at least one input parameter to generate a watermarked image and then stores the at least one parameter and an identifier of the requestor in association with an identifier of the requested stored document in a watermarked image log. The watermarked image is then transmitted to the requestor.

A computerized method for authenticating documents having VIZ sections, the method comprising capturing an image of a document to be authenticated from a scanner and enhancing the captured image, and using a processor for identifying and cropping a VIZ section in the image.

A method and system masks sensitive fields on a cheque image based one or more access privileges assigned to a user. The method involves receiving a cheque image at a cheque masking engine. A cheque template from one or more cheque templates is selected based on metadata associated with the cheque image. One or more zones of sensitive information associated with the cheque image are identified based on the one or more access privileges assigned to the user and a comparison with the selected cheque template. One or more characters are extracted from the one or more zones of sensitive information. The extracted one or more characters are aliased based on an aliasing rule. Another cheque image is generated by overlaying the one or more zones of sensitive information with the aliased one or more characters.

A sensor and a method for checking value documents are provided, each having a luminescent sheet-like substrate and a luminescent feature applied to a partial surface of the substrate, and to a value document processing apparatus. From the spectral vectors obtained for a plurality of measurement points and characterizing the intensity of the luminescent radiation of the value document detected in at least two spectral ranges, substrate intensity values and feature intensity values are determined, based on which a pure substrate mask is determined, which contains only those measurement points which reliably lie outside the feature. From the spectral vectors of the measurement points contained in the pure substrate mask, a mean substrate vector is determined, based on which corrected substrate intensity values and corrected feature intensity values and/or a spectral signature of the substrate and/or of the feature are or is, respectively, determined from the spectral vectors.

A method is described for checking a value document, wherein measuring values of the value document are detected in spatially resolved fashion. The measuring value detected in the respective measuring point is allocated to a node corresponding to this measuring point, and a two-dimensional network of nodes is formed therefrom. A network is formed from the two-dimensional network of the nodes and a source node and a sink node. By means of the maximally possible flow through the network, the value document is classified as suspected of forgery or not suspected of forgery. The maximally possible flow through the network is a measure for the degree of probability of the value document having a continuous object along a direction transverse to the direction of the network, said object indicating a manipulation of the value document, such as e.g. an adhesive strip or a separating line of a composed forgery.

The present disclosure relates to an apparatus and a method for recognizing media and a financial device. The apparatus for recognizing media according to an exemplary embodiment of the present disclosure comprises: an image sensor; a skew detector configured to detect skew of the media from media image acquired by the image sensor; a noise detector configured to detect a linear component in a region of interest which include character of the media image and a noise included in the media image based on direction information of the detected linear component and the skew of the media; and a controller configured to remove the detected noise from the region of interest and recognize the character of the region of interest from which the noise is removed.

A method for examining the optical condition of a value document on the basis of a digital image of at least a specified region of the value document, the image comprising pixels, comprises searching the pixels of the digital image are searched for sets of error pixels which are respectively given in that the error pixels fulfill a specified deviation criterion for an impermissible deviation of at least one specified pixel property, and the distance of each error pixel of the respective set from at least one other error pixel of the same set does not exceed a specified distance that is greater than the distance of directly neighboring pixels of the digital image, and a number of sets found during the search and/or a value for at least one property of at least one of the sets found during the search is ascertained.

A method for authenticating an object, comprising determining a physical dispersion pattern of a set of elements, determining a physical characteristic of the set of elements which is distinct from a physical characteristic producible by a transfer printing technology, determining a digital code associated with the object defining the physical dispersion pattern, and authenticating the object by verifying a correspondence of the digital code with the physical dispersion pattern, and verifying the physical characteristic.