Counterfeit identifying method and counterfeit identifying system based on zebra crossing infrared image characteristics

An infrared image and zebra crossing technology, applied in the field of RMB counterfeiting, can solve the problems of misidentification of high imitation counterfeit banknotes, etc.

Active Publication Date: 2015-01-21
SHENZHEN UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and system for identifying counterfeit RMB based on infrared image features of zebra crossings, aiming to solve the problem of misrecognition of high imitation counterfeit banknotes by existing banknote detectors

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  • Counterfeit identifying method and counterfeit identifying system based on zebra crossing infrared image characteristics

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[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0060] Such as figure 1 Shown, be a preferred embodiment of the present invention, based on the Renminbi authentication method of zebra crossing infrared image feature, comprise the following steps: Step A: collect the infrared image of Renminbi, and the infrared image that gathers is carried out preprocessing; Step B : Perform HOG (Histogram of Orient Gradient) feature extraction on the preprocessed infrared image, and select HOG features that meet the preset conditions from the extracted HOG features; Step C: According to the selected HOG features For counterfeiting.

[0061] When step A is exe...

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Abstract

The invention relates to RMB counterfeit identifying technologies, and provides a counterfeit identifying method and a counterfeit identifying system based on zebra crossing infrared image characteristics. The counterfeit identifying method comprises the steps of A, acquiring an infrared image of RMB and carrying out preprocessing on the acquired infrared image; B, extracting HOG characteristics of the preprocessed infrared image and selecting HOG characteristics which satisfy preset conditions from the extracted HOG characteristics; and C, carrying out counterfeit identifying according to the selected HOG characteristics. The counterfeit identifying method based on the zero crossing infrared image characteristics acquires a zebra crossing anti-counterfeit image of the RMB by adopting infrared light, and carries out processing and identifying on the zebra crossing anti-counterfeit image by using an improved HOG and a support vector machine, thereby being capable of effectively eliminating noise effects and improving the performance of infrared image counterfeit identifying, and being capable of improving the accuracy in counterfeit identification for authentic and counterfeit banknotes.

Description

technical field [0001] The invention relates to a counterfeit identification technology of RMB, in particular to a counterfeit identification method and system based on infrared image features of a zebra crossing. Background technique [0002] The 2005 version of 100 yuan, 50 yuan, 20 yuan, 10 yuan and other banknotes are imaged by infrared transmission, and the security line area presents a zebra crossing anti-counterfeiting pattern. Since the zebra crossing exists along with the safety line of the window, it is invisible in sunlight and can only be seen in infrared light transmission imaging, so it is extremely difficult to imitate. Among the high imitation counterfeit banknotes reported so far, for example, the counterfeit banknotes starting with HB90 and HD90 serial numbers have realistic watermarks, darkening inks, invisible denominations, magnetic features and ultraviolet features, and no counterfeiting of infrared zebra crossing anti-counterfeiting points has been see...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06K9/00G07D7/20G07D7/128G07D7/202
CPCG07D7/2016G06K2207/1012G06V10/507G06V10/20G06F18/285
Inventor 阮双琛胡学娟郭春雨刘承香张敏
Owner SHENZHEN UNIV
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