Recognition method and device for banknote zebra crossing black and white blocks

Abstract

A recognition method for banknote zebra crossing black and white blocks includes the following steps: obtaining a banknote image; obtaining to-be-detected images corresponding to a banknote zebra crossing area in the banknote image; horizontally dividing the to-be-detected images into a plurality of rows; separately detecting a row gray value of each of the plurality of rows; calculating a noise reduction gray value of each of the rows; calculating an average gray value of each of the rows according to the noise reduction gray value; determining a middle row of the white blocks of behavior zebra crossing of the row having the gray average value greater than the gray average value of all the adjacent rows; and determining the row having the gray average value less than the gray average value of all the adjacent rows as the middle row of the black blocks of the zebra crossing. By calculating the noise reduction gray value of each of the rows, the influence of uneven brightness on the black and white block detection of the zebra crossing is effectively eliminated; the middle rows of the black blocks and the white blocks can be effectively extracted by calculating the average gray value of each of the rows, and furthermore, distribution of the zebra crossing is determined, the calculation amount is simplified, and the recognition accuracy of the black and white blocks is high.

Description

technical field [0001] The invention belongs to the field of finance, and more specifically, the invention relates to a method and a device for identifying black and white blocks on a banknote zebra crossing. Background technique [0002] With the improvement of the technical level, the simulation level of counterfeit banknotes circulating in the market is getting higher and higher, which has caused serious damage to the financial order of the market. Banknote zebra crossing is an important means of banknote identification. [0003] In the prior art, the authenticity of banknotes is usually identified by detecting the light and dark gray level distribution of zebra crossings. However, the accuracy of this detection method needs to be improved. Therefore, a method is needed that can accurately and quickly effectively detect zebra crossings on banknotes. Contents of the invention [0004] In order to solve the above problems, the present invention discloses a method for ide...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the authenticity of banknotes is usually identified by detecting the light and dark gray level distribution of the zebra crossing. However, the accuracy of this detection method needs to be improved. Therefore, a method is needed that can accurately and quickly detect the zebra crossing of banknotes effectively.

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