Method and device for extracting banknote image, equipment and storage medium

A banknote image and extraction method technology, applied in character and pattern recognition, computer components, calculations, etc., can solve problems affecting banknote image recognition, poor banknote image quality, etc., to avoid slow speed and improve image extraction quality Effect

Inactive Publication Date: 2018-01-23
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the banknote inlet is designed according to the widest banknote and there is a gap, coupled with the high-speed movement of the banknote and the uneven friction between the banknotes, there will be a certain inclination and position error when the banknote reaches the image acquisition part , therefore, resulting in the poor quality of the banknote image after collection, which affects the recognition of subsequent banknote images

Method used

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  • Method and device for extracting banknote image, equipment and storage medium
  • Method and device for extracting banknote image, equipment and storage medium
  • Method and device for extracting banknote image, equipment and storage medium

Examples

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Embodiment 1

[0027] figure 1 It is a flow chart of a banknote image extraction method provided in Embodiment 1 of the present invention. This embodiment is applicable to the extraction of various banknote images, and the method can be executed by the banknote image extraction device provided in the embodiment of the present invention. , the device can be implemented in the form of software and / or hardware, and the device can be integrated into any device that provides the function of extracting banknote images, such as banknote validators or financial self-service devices. like figure 1 shown, including:

[0028] S110. Acquire the tilt-corrected image of the banknote to be extracted, and perform integer processing on the image of the banknote to be extracted by using a first integer processing method.

[0029] Wherein, the banknote image to be extracted is the image of the whole banknote collected by the sensor, and the currency type and size of the banknote are not limited. The first i...

Embodiment 2

[0042] figure 2 It is a flow chart of a banknote image extraction method provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of the above embodiments. The sliding window includes a first sliding window and a second sliding window, which provides optimized On the target image, the processing method of determining the boundary of the image to be extracted and extracting the image based on the sliding window using the row projection method and the column projection method, specifically: moving the target image row by row in the vertical direction of the target image The first sliding window, counting the sum of the gray values ​​of the pixels contained in the first sliding window when each row moves; after traversing the target image, the sum of the gray values ​​of the pixels will be included The minimum upper and lower boundaries of the position of the first sliding window are used as the upper and lower boundaries of the image to be ex...

Embodiment 3

[0079] image 3 It is a schematic structural diagram of a banknote image extraction device provided in Embodiment 3 of the present invention. This embodiment is applicable to the extraction of various banknote images. The device can be implemented in the form of software and / or hardware, and the device can be integrated In any device providing the extraction function of banknote images, for example, it may be a banknote validator. like image 3 As shown, it specifically includes: a first integer processing module 31 , a target image interception module 32 , an image to be extracted module 33 and a second integer processing module 34 .

[0080] The first integer processing module 31 is used to obtain the tilt-corrected image of the banknote to be extracted, and use the first integer processing method to perform integer processing on the image of the banknote to be extracted;

[0081] The target image intercepting module 32 is used to intercept the target image including the i...

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Abstract

The embodiments of the invention disclose a method and a device for extracting a banknote image, equipment and a storage medium. The method includes the following steps: acquiring a to-be-extracted banknote image after tilt correction, and integerizing the to-be-extracted banknote image through a first integerizing method; taking a target image containing a to-be-extracted image from the integerized to-be-extracted banknote image; determining the boundary of the to-be-extracted image on the target image through a row projection method and a column projection method based on a sliding window, and carrying out image extraction to get the to-be-extracted image; and integerizing the to-be-extracted image through a second integerizing method. The problem that the original banknote image extraction method is slow and the extracted image is of poor quality is avoided. The method improves the quality of image extraction, and is conducive to subsequent banknote image identification.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of banknotes, and in particular, to a banknote image extraction method, device, equipment and storage medium. Background technique [0002] At present, most banknote identification and counterfeiting works are processed based on banknote images, so the quality of the extracted banknote images is very important. [0003] Because the banknote inlet is designed according to the widest banknote and there is a gap, coupled with the high-speed movement of the banknote and the uneven friction between the banknotes, there will be a certain inclination and position error when the banknote reaches the image acquisition part , therefore, the quality of the banknote image after collection is poor, which affects the recognition of subsequent banknote images. Contents of the invention [0004] Embodiments of the present invention provide a banknote image extraction method, device, equipment, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/20
Inventor 黄勃
Owner SHENZHEN YIHUA COMP
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