PNG image decompression logic circuit and device
A logic circuit and decompression technology, which is applied in the field of image processing, can solve the problems of lack of flexibility and universal applicability, long decompression process time-consuming, huge hardware architecture, etc., to enhance flexibility and universal applicability, speed up decompression speed and Stability, the effect of shrinking the hardware architecture
Pending Publication Date: 2022-01-04
SUZHOU HUAXING YUANCHUANG TECH CO LTD
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[0005] The purpose of the present invention is to provide a PNG image decompression logic circuit, to solve the complex decoding process in the prior art, the hardware architecture is huge and does not have flexibility and universal applicability, and the technical problems of long time-consuming and unstable decompression process
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[0019] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
[0020] It should be noted that the term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also items not expressly listed other elements, or also include elements inherent in such a process, method, article, or apparatus.
[0021] Due to the particularity of its compression algorithm and format, PNG images have the advantages of high compression ratio, small size of generated files, less data loss and support for transparency effects. Based on t...
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The invention discloses a PNG image decompression logic circuit and device, and the circuit comprises an analysis and extraction module which is used for receiving original image data, analyzing and generating compressed image data; a decompression processing module which comprises a character length decoding tree module, a distance decoding tree module and a code length decoding tree module, wherein the decompression processing module is used for establishing a lookup table, decompressing the compressed image data and generating decompressed image data; and a reconstruction processing module which is used for receiving the decompressed image data, executing filtering reconstruction on the decompressed image data and generating output image data. According to the PNG image decompression logic circuit provided by the invention, the whole decompression process is completely completed by the logic circuit, language conversion and translation are not needed, the decompression speed is high, the stability, the flexibility and the general applicability are high, the requirement of fast picture switching can be met, and the overall hardware architecture is small.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a PNG image decompression logic circuit and device. Background technique [0002] With the rapid development of image processing technology and computer technology, PNG image (Portable Network Graphics, portable network graphics) is a new type of image file storage format for bitmaps, because it has the advantages of traditional GIF format (Graphics Interchange Format, graphics exchange format) It has been widely used due to its characteristics. In order to reduce the amount of data occupied by the Internet and image usage, the lossless compression technology for PNG has also been widely used. In contrast, how to completely and quickly decompress PNG images has gradually become an urgent problem to be solved in this field. technical problem. [0003] In the prior art, through the cooperation of FPGA (Field Programmable Gate Array, field programmable logic gate array) a...
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IPC IPC(8): H04N19/42
CPCH04N19/42Y02D10/00
Inventor 卢洋洋石景嘉
Owner SUZHOU HUAXING YUANCHUANG TECH CO LTD