METHOD OF IDENTIFICATION OF PRINTED FORM OF DOCUMENT AND DEVICE FOR THIS PURPOSE Russian patent published in 2014 - IPC G07D7/20 G06K9/52 

FIELD: printing.

SUBSTANCE: invention relates to means of identification of the printed form of the document. In the process the following is carried out: a stage of printing at least one document of the said printed form; a stage of capture with high resolution of at least one image of at least a part of the said document; a stage of extraction of the geometrical characteristics of at least one captured image; a stage of storing the extracted geometrical characteristics. In the process of identification it is defined whether the said printed form was used for printing the document-candidate, at that a stage of capture with high resolution of the image of a part of the said document-candidate is carried out, corresponding to the relevant part of the document, the geometrical characteristics of which was preserved. Then, the stage of extraction from the image of the said document-candidate of geometrical characteristics is carried out, which corresponds to the stored geometrical characteristics, and the stage of determining whether the measure of correlation of the geometrical characteristics exceeds the said document-candidate and the stored geometrical characteristics of the predetermined limit value.

EFFECT: improvement of protection and operation speed of identification.

10 cl, 37 dwg, 1 tbl