Bank note one-dimensional signal detection method and device

The technology of a detection method and a detection device is applied to the authenticity inspection of banknotes, the processing of coins or valuable banknotes, instruments, etc., which can solve the problems that abnormal samples are difficult to be distinguished, banknotes are difficult to accurately identify, and normal samples are rejected by mistake. Improved ability and stability of recognition, rich effects of processing means

Active Publication Date: 2017-03-29
GRG BAKING EQUIP CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for detecting a one-dimensional signal of a bill, by converting the one-dimensional signal data of a bill into a two-dimensional gray value, then preprocessing the two-dimensional gray value, and finally processing the two-dimensional data The method detects the two-dimensional gray value to detect whether the bill is stuck with tape, authenticity and face value, and solves the problem that the existing one-dimensional signal detection method is difficult to distinguish the abnormal samples and the normal samples are mistakenly rejected, especially for the transparent ones pasted. Banknotes with adhesive tape are difficult to accurately identify and other technical problems

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  • Bank note one-dimensional signal detection method and device

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no. 1 example

[0089] see figure 1 A first embodiment of a method for detecting a one-dimensional signal of a bill provided by an embodiment of the present invention includes:

[0090] 101. Obtain in real time the one-dimensional signal data of bills collected by at least one sensor;

[0091] In the embodiment of the present invention, it is first necessary to acquire the one-dimensional signal data of the bill collected by at least one sensor in real time.

[0092] 102. Convert the one-dimensional signal data of at least one path of notes into two-dimensional grayscale values ​​I(x,n) respectively through the first formula and map them to the grayscale image sequentially according to the number of signal channels. The first formula is where g (x,n) is one of the gray levels of the two-bit gray value, M(x,n) is the one-dimensional signal data, M min is the minimum value in one-dimensional signal data, M max It is the maximum value in the one-dimensional signal data, the range of x is th...

no. 2 example

[0096] see figure 2 A second embodiment of a method for detecting a one-dimensional signal of a bill provided by an embodiment of the present invention includes:

[0097] 201. Obtain in real time the one-dimensional signal data of bills collected by at least one sensor;

[0098] In the embodiment of the present invention, firstly, the bill one-dimensional signal data collected by at least one sensor is acquired in real time. It should be noted that the bill one-dimensional signal data may be a thickness signal, a magnetic signal and other authentication signals.

[0099] 202. Convert the one-dimensional signal data of at least one channel of bills into two-dimensional grayscale values ​​I(x,n) through the first formula and map them to the grayscale image in sequence according to the number of signal channels. The first formula is where g (x,n) is one of the gray levels of the two-bit gray value, M(x,n) is the one-dimensional signal data, M min is the minimum value in one-...

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Abstract

The invention discloses a bank note one-dimensional signal detection method and device. According to the bank note one-dimensional signal detection method and device, bank note one-dimensional signal data are converted into a two-dimensional gray value; the two-dimensional gray value is preprocessed; and the two-dimensional gray value is detected through using a two-dimensional data processing method, so that whether an adhesive tape is bonded on a bank note can be detected, the authenticity and face value of the bank note can be detected. According to an existing one-dimensional signal detection, abnormal samples are difficult to be distinguished, and normal samples are falsely denied, and bank notes bonded with adhesive taps are difficult to be identified accurately, while with the bank note one-dimensional signal detection method and device of the invention adopted, the problems in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of banknote identification, in particular to a method and device for detecting a one-dimensional signal of a bill. Background technique [0002] With the rapid development of the economy, the circulation of banknotes is increasing day by day. The emergence of counterfeit banknotes will affect people's normal life at least, and at worst will cause the country's economic instability, interfere with the normal order of currency circulation, and destroy the principle of social credit. [0003] Bill recognition technology is changing with each passing day. The existing mainstream bill identification technology is one-dimensional signal detection, which includes magnetic signal recognition and thickness signal recognition. [0004] However, the traditional bill one-dimensional signal detection method has certain limitations, for example: 1 is not sensitive to the judgment of the position information of bill feature points, ...

Claims

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Application Information

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IPC IPC(8): G07D7/189G07D7/183G07D7/202
CPCG07D7/2041
Inventor 龚岩王荣秋王佳孙燕
Owner GRG BAKING EQUIP CO LTD
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