Paper money alteration information identification method and device
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A banknote, to-be-recognized technology, applied in character and pattern recognition, computer parts, computing, etc., to achieve the effect of reducing computing time
Inactive Publication Date: 2015-10-28
SHENZHEN YIHUA COMP +2
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[0003] The purpose of the embodiments of the present invention is to propose a method and device for identifying information on counterfeit banknotes, aiming to solve the problem of how to conveniently and effectively identify information on counterfeit banknotes that have been altered
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Embodiment 1
[0046] refer to figure 1 , figure 1 It is a schematicflowchart of a method for identifying banknote alteration information in an embodiment of the present invention.
[0047] In Embodiment 1, the method for identifying banknote alteration information includes:
[0048] Step 101, acquiring an infraredtransmission image of the banknote to be identified within a preset spectral band range;
[0049] Preferably, the acquisition of the infrared transmission image of the banknote to be identified within the preset spectral band range includes:
[0050] Acquire infrared transmission images in the spectral band between 920mm and 960mm.
[0051] Specifically, although under visible light, the alteration traces of the altered banknotes are not obvious, but under this specific spectral band, taking the infrared transmission image of a certain altered banknote as an example, in the left area of the anti-counterfeiting metal wire, there are several A black line with a width of 3 pix...
Embodiment 2
[0070] refer to Figure 4 , Figure 4 It is a schematic diagram of the functional modules of the device for identifying banknote alteration information according to the embodiment of the present invention.
[0071] In the second embodiment, the device for identifying banknote alteration information includes:
[0072] An acquisition module 401, configured to acquire an infrared transmission image of the banknote to be identified within a preset spectral band range;
[0073] Preferably, refer to Figure 5 , Figure 5 It is a schematic diagram of the functional modules of the acquisition module 401 in the embodiment of the present invention.
[0074] exist Figure 5 Among them, the acquisition module 401 includes:
[0075] The acquisition unit 501 is configured to acquire an infrared transmission image with a spectral band between 920mm and 960mm.
[0076] Specifically, although under visible light, the alteration traces of the altered banknotes are not obvious, but under ...
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Abstract
The embodiment of the invention discloses a paper money alteration information identification method and device. An infraredtransmission image of paper money to be identified within a preset spectral waveband range is acquired; the sub-image of the infraredtransmission image between pixel point intervals within the preset range is intercepted; the pixel value of each pixel point in the sub-image is calculated, contrast ratio of anti-counterfeiting metal wires and peripheral black and white anti-counterfeiting characteristic intervals of the anti-counterfeiting metal wires and the background is maximized, and alteration information of papery money to be identified is confirmed according to the calculated image so that the position of alteration traces is limited by detecting the position of alteration trace columns firstly and calculation time is reduced; and after the position of the alteration column traces is detected, the alteration traces are identified so as to be distinguished from normal paper money with folds.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of banknote identification, and in particular to a method and device for identifying banknote alteration information. Background technique [0002] Altered valuable counterfeit coins are mainly divided into multiple parts by cutting or separating the front and back of valuable real coins, and then reassemble some genuine coins and some counterfeit coins to make a valuable counterfeit coin with a combination of true and false. Turn one banknote into multiple, so as to achieve the purpose of increasing the face value of currency circulation. At present, patchwork of valuable counterfeit currency accounts for the vast majority of the counterfeit currency of value. The main method is to divide the real currency of RMB into two parts, and then combine them with counterfeit currency to increase value, or combine part of them with counterfeit currency. Some of them are realized in the for...
Claims
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