Preprocessing method and system for realizing similar image compression based on FPGA

A similar image and preprocessing technology, applied in the field of image processing, can solve the problems of low compression rate, occupying computer CPU and memory, and long compression time, so as to achieve the effect of improving compression rate, improving efficiency and reducing loss

Active Publication Date: 2020-06-23
WUHAN ZHONGYUAN HUADIAN SOFTWARE
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Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a preprocessing method and system based on FPGA to realize similar image compression, and s

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  • Preprocessing method and system for realizing similar image compression based on FPGA
  • Preprocessing method and system for realizing similar image compression based on FPGA
  • Preprocessing method and system for realizing similar image compression based on FPGA

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[0035] The present invention will be further explained below in conjunction with the drawings:

[0036] The method of the present invention receives multiple similar images by using an external FPGA, and calculates the average or median of the data of the pixels at the same position in the multiple similar images to obtain a model image; each similar image and the model image are processed Compare and compare with the model threshold, because the similarity of information between similar images is very large, so that the pixel data in each similar image that is similar to the model image can be replaced with the data of the model image, so that a large number of similar and continuous The data of the pixel is simplified into two data: position information and quantity information, which greatly improves the compression rate; at the same time, the process is processed by an external FPGA device, which can not only increase the computing speed, but also release the computer's memory...

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Abstract

The invention provides a preprocessing method and system for achieving similar image compression based on an FPGA, and belongs to the technical field of image processing. Calculating the average valueor median of the data of the pixel points at the same position in the plurality of similar images to form a model image; comparing each similar image with the model image, and calculating an absolutevalue of a difference value of data of pixel points at the same position; if the absolute value of the difference value corresponding to more than two continuous pixel points is less than or equal toa preset model threshold, outputting the position information of the first pixel point and the quantity information of the continuous pixel points; and if not, outputting the original image data. Anexternal FPGA chip is used for processing, the compression rate is high, the compression time is short, a computer can be released for other processing, compressed data can be further compressed through a traditional compression method, and the image compression rate is increased.

Description

Technical field [0001] The present invention relates to the technical field of image processing, in particular to a preprocessing method and system for implementing similar image compression based on FPGA. Background technique [0002] The biggest disadvantage of traditional compression is that it is based on the image itself, so when multiple similar images are compressed, the traditional compression algorithm needs to compress each image separately, which results in low image compression rate and compression. long time. Moreover, when compressing a large number of similar images, it will take up a lot of compression time and memory space of the computer, which is also a waste of CPU resources. Summary of the invention [0003] The technical problem solved by the present invention is to provide a preprocessing method and system for similar image compression based on FPGA, and solve the problems of low compression rate, long compression time and occupation of computer CPU and mem...

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Application Information

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IPC IPC(8): H04N19/42
CPCH04N19/42
Inventor 邓政詹万鹏陈伯芳危必波郑容刘望张小波王永业汪勇飞王越杨竣
Owner WUHAN ZHONGYUAN HUADIAN SOFTWARE
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