Preprocessing method and system for similar image compression based on FPGA

A similar image and preprocessing technology, applied in the field of image processing, can solve the problems of computer CPU and memory occupation, low compression rate, long compression time, etc., and achieve the effect of improving efficiency, increasing compression rate and reducing loss

Active Publication Date: 2022-02-18
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 solve the problems of low compression rate, long compression time and occupation of computer CPU and memory when traditional compression methods compress similar images

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

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing:

[0036] The method of the present invention receives a plurality of similar images by utilizing external FPGA, and calculates the average value or the median of the data of the pixel point of same position in a plurality of similar images, obtains model image; Each similar image and model image are carried out Compared with the model threshold, since the information similarity between similar images is very large, the pixel data in each similar image that is similar to the model image can be replaced by the data of the model image, so that a large number of similar and continuous The pixel data 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 improve the computing speed, but also release the memory and CPU of the com...

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Abstract

The present invention provides a preprocessing method and system for realizing similar image compression based on FPGA, which belongs to the technical field of image processing. The method of the present invention receives multiple similar images by using an external FPGA chip; calculates pixels at the same position in multiple similar images The average or median of the point data constitutes a model image; each similar image is compared with the model image respectively, and the absolute value of the difference between the data of the pixel points at the same position is calculated; if more than two consecutive If the absolute value of the difference corresponding to the pixel is less than or equal to the preset model threshold, the position information of the first pixel and the number of consecutive pixels are output; otherwise, the original image data is output. The invention utilizes an external FPGA chip for processing, has high compression rate and short compression time, and can release the computer to do other processing, and the compressed data can be further compressed by traditional compression methods to improve image compression rate.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a preprocessing method and system for realizing 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 poor compression long time. Moreover, when a large number of similar images are compressed, a large amount of compression time and memory space of the computer will be occupied, which is also a waste of CPU resources. Contents of the invention [0003] The technical problem solved by the present invention is to provide a preprocessing method and system for realizing similar image compression based on FPGA, and solve the problems of low compression rate, long compression time and occupatio...

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Application Information

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Patent Type & Authority Patents(China)
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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