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Financial bill image compression method and device

A technology of financial bills and compression methods, applied in image communication, electrical components, etc., can solve problems such as difficult to meet the storage space for fast transmission of original images, affect key information identification, and low reliability of bill identification, so as to ensure effective identification and guarantee Reliable identification, effect of reducing data volume

Inactive Publication Date: 2017-06-20
SHANDONG NEW BEIYANG INFORMATION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When compressing the original image, due to the low compression efficiency of the lossless compression method, it is difficult to meet the needs of fast transmission of the original image and to reduce the storage space occupied by the original image in the database of the financial bill management system. Lossy compression of the entire image
[0004] However, compared with the original image, the image after lossy compression and decompression will lose some details, which will affect the identification of key information in the original bill, resulting in low reliability of bill identification

Method used

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  • Financial bill image compression method and device
  • Financial bill image compression method and device

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Experimental program
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Embodiment 1

[0023] figure 1 It is a flowchart of a method for compressing a financial receipt image provided by Embodiment 1 of the present invention. This embodiment is applicable to the case of compressing a financial receipt image. The method can be performed by a processing device of a financial bill image, which is a computer connected to an image acquisition device (such as a scanner), and the image acquisition device is used to project light of a preset wavelength (such as a red light, an infrared lamp) to the financial bill. , ultraviolet lamp, etc.), and obtain the image of the financial bill irradiated with light of a preset wavelength, and the computer is used to compress the image of the financial bill acquired by the scanning device. The method specifically includes:

[0024] S110. Acquire at least one key feature region from the original image.

[0025] The original image is a financial bill image captured by the image capturing device and irradiated with light of a preset...

Embodiment 2

[0037] The embodiment of the present invention also provides a method for compressing a financial bill image. As a further description of the embodiment, S110. Acquiring at least one key feature region from the original image can be implemented as:

[0038] The key feature area is obtained from the original image according to the combination of any one or more of the key feature's color, pixel value distribution, shape, and distribution position.

[0039]The anti-counterfeiting features in the key features specifically include printing ultraviolet or infrared patterns and embedding fluorescent fiber filaments when the medium of financial bills is produced. The use features in the key features specifically include: when issuing financial bills, use a special printer to print texts such as drawer information, payee information, and the amount of the bill on the set area on the surface of the financial bill, and stamp them on the set area on the bill surface. The financial seal o...

Embodiment 3

[0107] The embodiment of the present invention provides a kind of compression device 1 of financial bill image, and this device 1 is located in the processing equipment of financial bill image, such as Figure 4 As shown, the device 1 includes:

[0108] A key feature area extraction unit 11, configured to obtain at least one key feature area from the original image;

[0109] A lossless compression unit 12, configured to perform lossless compression on the at least one key feature area acquired by the key feature area acquisition unit to obtain at least one key feature area compressed file;

[0110] A lossy compression unit 13, configured to perform lossy compression on the original image to obtain a lossy compressed file of the original image;

[0111] A compressed file generating unit 14, configured to generate a financial instrument image compressed file according to the at least one key feature area compressed file obtained by the lossless compression unit 12 and the origi...

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Abstract

The present invention discloses a financial bill image compression method and device. The method comprises: obtaining at least one key feature area from an original image; performing lossless compression of the at least one key feature area, and obtaining at least one key feature area compressed file; performing lossy compression of the original image, and obtaining the lossy compressed file of the original image; and generating a financial bill image compressed file according to at least one key feature area compressed file and the lossy compressed file of the original image. The financial bill image compression method and device perform lossless compression of a key feature area related to key information so that the image quality of the key feature area portion cannot be reduced, and the reliable identification of the key information is ensured; and moreover, the financial bill image compression method and device can perform lossy compression of an original image so as to greatly reduce the data bulk of the compressed file and reduce the memory occupied by the compressed file. The financial bill image compression method and device ensure the effective identification of the key information and improve the reliability of the bill identification while reducing the data bulk of the original image.

Description

technical field [0001] Embodiments of the present invention relate to image compression technology, and in particular, to a method and device for compressing financial bill images. Background technique [0002] Financial bills are bills issued by financial institutions or financial institutions undertake payment obligations. The existing financial bills in my country include bills of exchange, checks, promissory notes, etc. The existing method for identifying financial bills is to obtain the original image of the financial bill through a scanning device when issuing the financial bill, and upload the acquired original image of the financial bill to the database archive of the financial bill management system of the issuing institution. When the issuing agency cashes the financial bill, the staff of the issuing agency first use the scanning device to obtain the image of the financial bill to be cashed, and then retrieve the original image of the financial bill corresponding t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/41
CPCH04N1/4115
Inventor 朱先刚刘腾澳李洪明姜晓军王春涛
Owner SHANDONG NEW BEIYANG INFORMATION TECH CO LTD
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