Massive image data compression method

A technology of image data and compression method, applied in image communication, digital video signal modification, television and other directions, can solve the problem of not calculating the correlation of image content, not considering the relationship between image content, difficult to compress and so on

Active Publication Date: 2009-12-02
京北方信息技术股份有限公司
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AI Technical Summary

Problems solved by technology

However, most of the existing compression formats for bill images are JPEG and other compression formats. The biggest problem in the existing technology is that it does not take into account the content relationship between images.
On content-related images such as bills, it is difficult to achieve efficient compression because the correlation of image content is not calculated
For the compression of millions or even tens of millions of images, there is currently no more effective compression method

Method used

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Embodiment Construction

[0075] In order to further illustrate the principles and characteristics of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0076] Such as figure 1 Shown is a schematic diagram of the image compression and decompression flow chart of the preferred embodiment of the present invention, as can be seen from the figure, the steps of the present invention are:

[0077] Step 10 input large batches of bill images;

[0078] Step 11 Sorting and Sorting: Classify and sort according to the type of the image bill, including the size of the bill, the image resolution, the front and back numbers, the similarity of the image difference, the type of the image layout, the type of supported business, etc. (that is, the type is determined by the bill Size, front and back numbers, supported business types, etc.) to form different classification channels, each type of image ticket data is sorte...

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Abstract

The invention relates to a compression method and belongs to a method of data compression technology in the field of information technology. The method comprises the following steps: inputting large-batch bill images; sorting and sequencing the bill images; utilizing a dynamic image compression algorithm to compress the images; packing and encrypting the images; adopting a dynamic image decompression algorithm to decompress the images and reducing and taking each image picture out; and outputting the batch images after the sorting and reduction. Compared with JPEG 2000, the compression algorithm provided by the invention has the advantages that: the compression speed is improved by 4 times; the size of resulting file of the compression is one-tenth of that of the original image; and after the decompression, the discrimination rate of OCR is kept unchanged basically. Based on the property, the compression method can transmit a real-time image in the network by using only small bandwidth.

Description

technical field [0001] The present invention relates to a compression method, which belongs to the field of data compression technology and method in the field of information technology, and specifically belongs to the technical field of data compression technology and method mainly for compressing image data, especially mass image data. Background technique [0002] Image compression methods are used to reduce the amount of signal space required to represent an image. The amount of signal space can be the actual storage space (such as the size of the memory); or a period of time (such as the time required to transmit the information); or the bandwidth required to transmit the information, etc. For example, the data volume of the original image is two million bits (2 megabytes). If there is an image compression method that can compress the original image to only 0.2 megabits, then, in terms of storage, each image It occupies only one tenth of the original memory space (or i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50H04N19/51H04N19/61H04N19/70
Inventor 谭宜勇孙海涛
Owner 京北方信息技术股份有限公司
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