METHOD FOR AUTOMATIC RECOGNITION OF IDENTIFICATION NUMBER Russian patent published in 2010 - IPC G06K9/62 

FIELD: information technology.

SUBSTANCE: initial image of the area in which the identification number must be found is formed, a rectangular area is selected, zones for finding separate positions of the number are detected in the area and characters are identified on the detected positions. The pre-formed initial image is cleaned using a morphological filter and coordinates of approximate centres of each position of the identification number in their detection zones are determined, coordinates of each position and the approximate font parametre used in printing the identification number are determined from the stored fragments of characters of the number, an initial set of templates of characters of the approximate font of the recognised number is formed. During recognition of characters, templates with varying font parametres are superimposed on the zones where positions of the number are found with cyclic shifting of templates relative the found approximate centres of the positions, and comparative analysis is carried out, during which a template is identified for each position, having maximum value of coefficient of coincidence with fragments of a character located at the given position.

EFFECT: more reliable recognition of damaged numbers with an unknown number and font of the digital characters used on stored fragments thereof.

5 cl, 3 dwg