A computer-implemented method for assessing if a character in a sample image is formed from a predefined selection of characters, comprising: processing a sample image with an alignment network to form a corrective transformation; applying the corrective transformation to the sample image to form a transformed image; computing a similarity of the transformed image with a corresponding reference image of a character from a predefined selection of characters to form a similarity score; and declaring the sample image not to comprise the character from the predefined selection of characters if the similarity score is less than a threshold.

A currency information provision system (1) comprises: a database server (2) in which currency image information is stored as one type of currency information about multiple types of currency; and an information processing terminal (3) that acquires target image information (IA), which is image information for a search object, and transmits the target image information (IA) to the database server (2), the database server (2) comparing the target image information (IA) with the currency image information, and thereby searching a candidate currency estimated to be the same type as currency included in the search target, from among the multiple types of currency, and transmitting the currency information (IB) of the candidate currency to the information processing terminal (3), and the information processing terminal (3) providing currency information for the candidate currency.

A currency information provision system (1) comprises: a database server (2) in which currency image information is stored as one type of currency information about multiple types of currency; and an information processing terminal (3) that acquires target image information (IA), which is image information for a search object, and transmits the target image information (IA) to the database server (2), the database server (2) comparing the target image information (IA) with the currency image information, and thereby searching a candidate currency estimated to be the same type as currency included in the search target, from among the multiple types of currency, and transmitting the currency information (IB) of the candidate currency to the information processing terminal (3), and the information processing terminal (3) providing currency information for the candidate currency.

The invention relates to a method for authenticating a secure document comprising data printed by analogue or digital printing, said method comprising the following operations:—definition, from among a set of graphical and/or alphanumeric data of the secure document, of at least one distinct data area including at least one distinctive pattern;—during an operation of fabrication of the secure document, reading the distinct data area onto a storage device so as to form a distinct reference data area;—in the course of an operation of verification of the authenticity of the secure document, extracting the distinct data area from a digitized version of the secure document; and—comparing the extracted distinct data area with the distinct reference data area so as to determine a level of matching between said distinct data areas and to deduce therefrom a positive authentication or negative authentication.

The invention relates to a method for authenticating a secure document comprising data printed by analogue or digital printing, said method comprising the following operations:—definition, from among a set of graphical and/or alphanumeric data of the secure document, of at least one distinct data area including at least one distinctive pattern;—during an operation of fabrication of the secure document, reading the distinct data area onto a storage device so as to form a distinct reference data area;—in the course of an operation of verification of the authenticity of the secure document, extracting the distinct data area from a digitized version of the secure document; and—comparing the extracted distinct data area with the distinct reference data area so as to determine a level of matching between said distinct data areas and to deduce therefrom a positive authentication or negative authentication.

An input and output controller transmits timing signals respectively to sensor modules based on unit conveyance distances of the respective sensor modules and a predetermined order of the sensor module. The sensor modules reads, in response to the timing signals, identification information included in an object and respectively generates read data and. The input and output controller acquires the read data respectively generated by the sensor modules and respectively outputs the read data in the predetermined order.

A currency classification device that classifies currency types using currency images includes a feature value calculator, a storage, and an output unit. The feature value calculator calculates feature values for every currency type that is a candidate for classification from an image area common in images of every currency type. The storage stores the feature values calculated by the feature value calculator from learning images, which are currency models, as templates for every currency type. The output unit outputs the currency type corresponding to the template having a highest value of similarity with the feature value calculated by the feature value calculator an input image, which is a currency image subject to classification, in the templates stored in the storage as a classification result.

A method for testing a valuable document including illuminating the valuable document line by line such that a first group of lines is illuminated with light of a first wavelength and a second group of lines is illuminated with light of a second wavelength, reflection light that is reflected from the lines and/or transmission light that passes through the lines. First data are representative of the reflection light and/or transmission light assigned to the lines of the first group and second data are representative of the reflection light and/or transmission light assigned to the lines of the second group. Further, processing the first data such that a first image generated from the first data has a first resolution, and the second data such that a further image generated from the second data has a second resolution, comparing the first and second images with first and further reference images.

A method for testing a valuable document including illuminating the valuable document line by line such that a first group of lines is illuminated with light of a first wavelength and a second group of lines is illuminated with light of a second wavelength, reflection light that is reflected from the lines and/or transmission light that passes through the lines. First data are representative of the reflection light and/or transmission light assigned to the lines of the first group and second data are representative of the reflection light and/or transmission light assigned to the lines of the second group. Further, processing the first data such that a first image generated from the first data has a first resolution, and the second data such that a further image generated from the second data has a second resolution, comparing the first and second images with first and further reference images.

A system comprises a combination of digital fingerprint authentication techniques, processes, programs, and hardware to facilitate highly reliable authentication of a wide variety of composite physical objects. “Composite” in this case means that there are distinct regions of the object that must be authenticating individually and in tandem to authenticate the entire object. Preferably, a template is stored that defines for a class of objects what regions must be found, their locations, optionally semantic content of the regions, and other criteria. digital fingerprinting is utilized to locate and attempt to match candidate regions by querying a database of reference object records.