Smudged serial number classification method and system

Abstract

The invention discloses a smudged serial number classification method and system. The method includes the following steps that: a horizontal serial number-containing precise area and a longitudinal serial number-containing precise area in a banknote image are extracted; binarization processing is performed on the horizontal serial number-containing precise area and the longitudinal serial number-containing precise area; each character is cut from the binarized horizontal serial number-containing precise area and longitudinal serial number-containing precise area; the number of black spots of the characters of the horizontal serial number-containing precise area is compared with the number of black spots of characters at corresponding positions of the longitudinal serial number-containing precise area; and the serial numbers are classified according to comparison results. With the smudged serial number classification method and system of the invention adopted, the smudged serial numbers and normal serial numbers of banknotes can be accurately classified, and classified smudged serial number images are not recognized in a later stage. The smudged serial number classification method and system are of great significance for normal circulation of banknotes.

Description

technical field [0001] The invention relates to the field of serial number recognition, in particular to a method and system for classifying dirty serial numbers. Background technique [0002] The serial number on the banknotes can record and manage the entire circulation process of each banknote from issuance to recycling, realize the traceability of circulating banknotes, analyze economic and social problems, monitor counterfeit currency and divide responsibilities, and issue and supervise RMB All use important practical significance. By observing the normal serial number areas, it is found that there are two serial number areas in the 100 yuan of the 2015 version and the 100 yuan and 50 yuan of the 1999 edition, and the serial numbers in the two serial number areas are the same. However, the processing of banknote serial numbers is all about the extraction and identification of serial numbers, and there is no mention of the method of processing the serial number images o...

AI Technical Summary

Problems solved by technology

However, the processing of banknote serial numbers is all about the extraction and identification of serial numbers, and there is no mention of the method for processing the serial number images of old and dirty banknotes currently in circulation on the market. If the location of the serial number is different, it may lead to the failure of the extraction and recognition of the serial number, resulting in a decrease in the recognition rate of the serial number of the self-service equipment.

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