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Color image compression method based on interpolation reconstruction

A technology of color image and compression method, which is applied in image communication, digital video signal modification, electrical components, etc., and can solve problems such as interpolation reconstruction distortion

Inactive Publication Date: 2018-10-09
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to provide a novel color image compression method based on interpolation and reconstruction in order to overcome the problem that the down-sampling interpolation reconstruction of the chrominance component in the traditional color image compression coding technology has obvious distortion. The proposed adaptive filter based on interpolation compression is used to filter the chrominance components, which not only greatly saves the bit rate, but also provides more prior information for the interpolation reconstruction of the chrominance components at the decoding end, so that the entire color The compression coding efficiency of the image is improved; compared with the traditional compression coding of the color image, the interpolation reconstruction of the chrominance component of the present invention has a higher quality and a lower code rate, and the overall coding efficiency of the color image is significantly improved

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  • Color image compression method based on interpolation reconstruction
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Embodiment Construction

[0081] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0082] This embodiment provides a color image compression method based on interpolation reconstruction, such as figure 1 Shown; this embodiment uses a simulation experiment to verify the feasibility of the present invention, all steps have been experimentally verified; the width of the image used in the experiment is W=16×m, and the height is H=16×n, m And n are natural numbers;

[0083] The specific implementation steps of the color image compression method based on interpolation reconstruction are as follows:

[0084] Step 1, color space conversion

[0085] Use the standard RGB-YCbCr image color space conversion method to convert the input color image from RGB space to YCbCr image to obtain the image brightness component Y and chrominance components Cb, Cr;

[0086] Step 2. Perform a two-dimensional discrete cosine transform (DCT transform) on the luminance comp...

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Abstract

The invention belongs to the technical field of image compression, provides a color image compression method based on interpolation reconstruction and is used for overcoming the problem that in a traditional color image compression and coding technology, downsampling interpolation reconstruction of chrominance components is distorted obviously. According to the compression method provided by the invention, the chrominance components are filtered through utilization of a provided adaptive filter based on interpolation compression, a bit rate is greatly reduced, moreover, the relatively much prior information for the interpolation reconstruction of the chrominance components of a decoding end is provided, the interpolation quality is high, and the color fidelity of a finally synthesized RGBcolor image is high. According to the method, the coding bit rate is effectively reduced, and further the integrated coding efficiency of the color image is further improved.

Description

Technical field [0001] The invention belongs to the technical field of image compression, and specifically relates to a color image compression method based on interpolation reconstruction. Background technique [0002] As an important carrier of multimedia information, color images have many advantages such as intuitive, easy-to-understand, vivid image, etc., which are in line with the way humans perceive information and are regarded as a means of efficiently disseminating information. With the rapid development of the information industry today, color image processing and transmission technology has become a key technology for network information transmission due to its ability to store and transmit high-quality images with a lower data volume. [0003] Because color image data itself has the characteristics of large data volume, in order to improve coding efficiency, the method of color image compression coding is usually to convert the original image from RGB space to YUY space...

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Application Information

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IPC IPC(8): H04N19/117H04N19/122H04N19/129H04N19/132H04N19/18H04N19/182H04N19/186H04N19/48H04N19/85
CPCH04N19/117H04N19/122H04N19/129H04N19/132H04N19/18H04N19/182H04N19/186H04N19/48H04N19/85
Inventor 朱树元何志应王岩
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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