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Bank note image optical compensation correction method, bank note testing identification device, and ATM

A technology of banknote image and correction method, which is applied to the inspection of banknote authenticity, character and pattern recognition, processing coins or valuable banknotes, etc. problems, to achieve the effect of improving performance and reducing the failure rate

Inactive Publication Date: 2016-03-23
NDT SCI & TECH
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Problems solved by technology

Other microprocessors and modules in the identification and verification device have not achieved a good balance and scientific management in task assignment and data, command, and program flow management, which has affected the overall performance of the identification and verification device.

Method used

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  • Bank note image optical compensation correction method, bank note testing identification device, and ATM
  • Bank note image optical compensation correction method, bank note testing identification device, and ATM
  • Bank note image optical compensation correction method, bank note testing identification device, and ATM

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Embodiment Construction

[0040] The following is a clear and complete description of the technical solutions and advantages in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the specific embodiments described here are only used to explain the present invention and are not limited to the present invention .

[0041] Such as figure 2 As shown, the embodiment of the present invention discloses a banknote verification and recognition device with a banknote image optical compensation and correction device in an ATM.

[0042]Flowchart of the banknote image optical compensation correction method, the optical compensation correction method is applied to the identification and verification device, and the structural schematic diagram of the identification and verification device is as follows figure 2 As shown, it includes: an image acquisition unit 3, a programmable logic device (Field Programmable Gate Array, F...

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Abstract

The invention relates to a bank note image optical compensation correction method, a bank note testing identification device, and an ATM. The bank note image optical compensation correction method is applied to the bank note testing identification device; the ATM employs the bank note testing identification device. The method utilizes an ARM processor in a microprocessor to perform unified scheduling; a DSP (Digital Signal Processor) generates correction data together with a programming logic device, and utilizes the correction data to perform optical compensation correction on the original image data collected by a contact image sensor (CIS) to obtain data approaching real bank not image data. The microcontroller controls a whole flow of optical compensation correction, well equalizes and scientifically manages task dispatching and data, order and program flow, and improves the whole performance of the bank note testing identification device.

Description

technical field [0001] The invention relates to the field of ATM machines, in particular to a device for collecting banknote images by a contact image sensor for banknote verification and identification, and an ATM machine with such a banknote checker. Background technique [0002] Contact Image Sensor (Contact Image Sensor, CIS) is an optical sensor commonly used in banknote identification and verification devices at present. The response of each pixel of the image sensor to light shows inconsistency, which affects the scanned grayscale image and the identification of banknotes, reduces the acceptance rate of banknote identification, and increases the failure rate of banknote identification. Necessary light compensation and correction of the grayscale image scanned by the contact image sensor can reduce and avoid the influence of the above factors on the image scanned by the contact image sensor. [0003] Light compensation correction compensates each pixel of the contact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/20
CPCG07D7/2008
Inventor 蒋菲杨琼柱李翔
Owner NDT SCI & TECH
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