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

A recognition method and zebra crossing technology, applied in the financial field, to achieve the effect of high recognition accuracy and simplified calculation

Active Publication Date: 2018-10-26
SHENZHEN YIHUA COMP +2
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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,

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

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[0038] In order to make the objectives, technical solutions and technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are only for explaining the present invention, not for limiting the present invention.

[0039] figure 1 Shown is the grayscale image of the fifth edition of the 100 yuan RMB real currency, and the rectangle marked in the figure is the zebra crossing of the note. It should be noted that although the banknote shown in the figure is the fifth edition of 100 yuan, all the technical solutions of this application can be applied to all the banknotes including the fifth edition of 100 yuan that are composed of black blocks and white blocks. Zebra crossing of any banknotes. In addition, “black” and “white” here are not absolute concepts. In the zebra cros...

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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...

Claims

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Application Information

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IPC IPC(8): G07D7/005
CPCG07D7/0054
Inventor 石鸥薛敏
Owner SHENZHEN YIHUA COMP
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