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Method and device for identifying banknote orientation

A technology for banknotes and to-be-recognized, applied in the field of image recognition, can solve the problems of placing offset, the average gray value cannot represent the pattern shape, and the recognition result is inaccurate, and achieves the effect of high accuracy.

Active Publication Date: 2019-06-11
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned prior art has the following disadvantages: the placement of banknotes in the banknote detection equipment is inevitably offset, and the selected area is not accurate enough; too little information is extracted from the banknotes, and the average gray value cannot represent the pattern shape, and only the gray value is used The mean value is very little information, and the recognition results of banknotes are inaccurate

Method used

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  • Method and device for identifying banknote orientation
  • Method and device for identifying banknote orientation
  • Method and device for identifying banknote orientation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 It is a flow chart of a method for identifying the orientation of banknotes provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where financial equipment identifies banknotes. The method can be executed by a device for identifying orientations of banknotes. The device can be implemented by software and / or Or implemented in hardware, the device can be integrated into any equipment that provides banknote identification, such as typically banknote detectors or automatic deposit and teller machines. The method includes:

[0026] S101. Select a first area and a second area on the image of the first side of the banknote to be identified, and the second area and the first area are symmetrical about the central point of the image of the first side of the banknote to be identified.

[0027] Wherein, the image on the first side may be the front side or the back side of the banknote to be identified.

[0028] The banknote id...

Embodiment 2

[0041] figure 2 It is a flow chart of a method for identifying the face of banknotes provided by Embodiment 2 of the present invention. Embodiment 2 is based on the above-mentioned embodiments. Before selecting the first area and the second area on the image of the first side of the banknote to be identified, add A preset image area is selected, and the preset image area is processed to obtain a reference template. Correspondingly, the method of this embodiment includes:

[0042]S201. Select any one of the following areas on the obverse image of the reference banknote as the preset image area: the first area placed in the reverse direction, the first area placed in the forward direction, the second area placed in the reverse direction, and the second area placed in the forward direction. area, the third area placed in reverse, the third area placed in front, the fourth area placed in reverse, and the fourth area placed in front; or, select any one of the following areas on t...

Embodiment 3

[0053] image 3 It is a flow chart of a method for identifying the face of banknotes provided by Embodiment 3 of the present invention. Embodiment 3 is based on the above embodiments, and the image template corresponding to the first area, the image template corresponding to the second area, and the image template corresponding to the third area are The process of matching the image template and the image template corresponding to the fourth area with the reference template of the pre-stored preset image area is optimized. After the image template of the banknote to be recognized fails to match the reference template for the first time, the image template Flip and match against the reference template. Correspondingly, the method of this embodiment includes:

[0054] S301. Select any one of the following areas on the obverse image of the reference banknote as the preset image area: the first area placed in the reverse direction, the first area placed in the forward direction, ...

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Abstract

An embodiment of the invention discloses a method and device for recognizing banknote orientation. The method comprises the steps of selecting a first region and a second region on the first side image of a banknote to be recognized, the second region being symmetrical with the center point of the first region with respect to the first side image of the banknote to be recognized; selecting a third region and a fourth region on a second side image disposed backward the first side image, the positions of the third region and the fourth region in the second side image being the same as the positions of the first region and the second region in the first side image, respectively; matching image templates corresponding to the first region, the second region, the third region and the fourth region respectively with a reference template of a preset image region; and determining the orientation of the banknote to be recognized based on the matching result. According to the embodiment of the invention, the orientation of the banknote can be determined according to the matching result of the image templates of the four regions of the banknote to be recognized and the reference template, the image templates and the reference template all contain the pattern shape of the banknote, and the recognition accuracy of the orientation is high by comparison with the template.

Description

technical field [0001] Embodiments of the present invention relate to image recognition technology, and in particular to a method and device for recognizing the orientation of banknotes. Background technique [0002] Banknote orientation recognition is the basis of banknote verification. Only after the overall orientation of the banknote is determined, can the banknote inspection equipment find each anti-counterfeiting area of ​​the banknote and verify each anti-counterfeiting area. [0003] An existing technology for identifying the orientation of banknotes is: selecting several specific areas on the double-sided image of the banknotes, comparing the average gray values ​​of these specific areas with each other, and determining the orientation of the banknotes according to the mutual comparison results. [0004] The above-mentioned prior art has the following disadvantages: the placement of banknotes in the banknote detection equipment is inevitably offset, and the selected...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/206
CPCG07D7/2008
Inventor 李杰
Owner SHENZHEN YIHUA COMP