A counterfeit identification method for banknotes with double crown numbers based on image matching

Abstract

The invention discloses a double-crown banknote counterfeit identification method based on image matching, which is mainly used for counterfeit identification work of the 2015 version of the Renminbi,and is particularly suitable for counterfeit identification of stitching currency. This method firstly adopts a multi-spectral identification device to identify Renminbi, extracts the horizontal crown characters and numbers with the white light image, extracts the vertical crown characters and numbers with the UV image, and performs image linear enhancement and otsu binary processing and character segmentation and normalization of two groups crown character and number images. Character unit images after normalization are matched one by one, and as long as there is a large difference in the matching of one character unit, the prompt that the banknote is doubtful is output. The method can be widely applied to the banknote counterfeit identification field, has high detection precision and good stability, and is particularly suitable for distinguishing splice banknotes in counterfeit banknotes.

Description

technical field [0001] The invention relates to paper currency identification technology, in particular to an image-matching-based method for identifying counterfeit banknotes with double-crown numbers that utilizes image processing technology to identify the authenticity of 2015-version RMB. Background technique [0002] Banknotes are known as the blood of modern finance and are indispensable and necessary items in real life. With the continuous development of the society and the continuous growth of the economy, the circulation of RMB is increasing day by day, and more and more high-simulation counterfeit coins appear in the field of circulation, and the cost methods of counterfeit coins also emerge in endlessly, seriously threatening the financial security of the country. Among them, there is a spliced ​​coin prepared by splicing technology. This spliced ​​coin can effectively inherit some authenticity points of the real banknote (such as invisible denomination, ultraviol...

AI Technical Summary

Problems solved by technology

Among them, there is a spliced ​​coin prepared by splicing technology. This spliced ​​coin can effectively inherit some counterfeit points of the real banknote (such as invisible denomination, ultraviolet characteristics, watermarks, and light-changing inks) through partial splicing with real banknotes. and magnetic features, etc.) to pass the detection of some financial instruments such as banknote detectors, and the main difficulty in the identification of spliced ​​coins is that the splicing gap is small, there is almost no texture change, and it may be genuine coins, which is very difficult to identify

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