Acquisition method, device, atm and storage medium of banknote pattern data

Abstract

The embodiments of the invention disclose an acquisition method and a device of paper money pattern data, an ATM and a storage medium. The method comprises the following steps of using a light sourcecorresponding to a first exposure condition to irradiate the front surface of paper money to be detected so that the front surface of the paper money to be detected presents an illumination pattern, and acquiring the illumination pattern data of the front surface of the paper money to be detected; and using the light source corresponding to a second exposure condition to irradiate the reverse sideof the paper money to be detected so that the reverse side of the paper money to be detected presents the illumination pattern, and acquiring the illumination pattern data of the reverse side of thepaper money to be detected. A problem that illumination pattern data acquired when financial equipment adopts a same exposure condition to irradiate the paper money is incomplete in the prior art canbe solved; the illumination pattern data of the two sides of the paper money can be effectively acquired; accuracy of acquiring the paper money illumination pattern data is increased; and high reliability information is provided for paper money authenticity identification.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of banknote identification, and in particular to a method, device, ATM and storage medium for acquiring banknote pattern data. Background technique [0002] Existing financial devices include various light sources, such as LED (Light Emitting Diode, light emitting diode) light sources, ultraviolet light sources, and infrared light sources. Financial machines use these light sources to irradiate banknotes to analyze and identify infrared ink images of banknotes, characteristics of paper or printing inks, colored fluorescent inks and invisible special fluorescent inks, and various banknote images. [0003] When existing financial instruments irradiate banknotes with light sources to obtain relevant data, fixed light sources are often used to irradiate the front and back sides of banknotes. For banknotes, when the front and back of banknotes are irradiated by light sources with the sa...

AI Technical Summary

Problems solved by technology

However, there are many fluorescent patterns on the front and back of the existing banknotes, and the brightness of the fluorescent patterns at different positions is different under the light source with the same exposure intensity and exposure time.

If the light source with a fixed exposure intensity and exposure time is too strong, some fluorescent patterns will be overexposed, and all useful information of the fluorescent patterns cannot be obtained.

If the light source with fixed exposure intensity and exposure time is weak, the gray value of some fluorescent patterns will be close to the surrounding background pattern, making it difficult to effectively extract the data of this part of the fluorescent pattern

It can be seen that the fluorescent detection device of the banknote identification module in the existing financial equipment cannot realize the accurate and effective acquisition of the fluorescent pattern data on the front and back of the banknote.

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