Image processing method, apparatus and system

An image processing and image block technology, applied in the field of image processing, can solve the problems of poor coding effect, loss, and poor reconstruction of image blocks at the encoding end, and achieve better encoding effect and better effect

Active Publication Date: 2019-01-22
HUAWEI TECH CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, the encoding end uses down-sampling processing for the entire image. However, the characteristics of each image block included in the entire image may be different. For example, some image blocks may be relatively flat, and the encoding end is suitable for down-sampling processing. ; Some image blocks

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  • Image processing method, apparatus and system
  • Image processing method, apparatus and system
  • Image processing method, apparatus and system

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Embodiment Construction

[0080] Hereinafter, some technical terms in this application are explained to facilitate the understanding of those skilled in the art.

[0081] Digital video is video recorded in digital form. Digital video consists of multiple frames of digital images. Usually the original video includes a large amount of data, which is not suitable for storage and transmission, and it is necessary to use efficient video compression coding technology to compress the original data.

[0082] Video compression technology achieves the purpose of compression by eliminating video redundancy. Video redundancy mainly includes the following items: spatial redundancy, temporal redundancy, visual redundancy and information entropy redundancy.

[0083] Spatial redundancy: It is the most important data redundancy that exists in static images. It means that in an image, the magnitudes of adjacent pixels are relatively similar, and this spatial coherence is called spatial correlation or spatial redundan...

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Abstract

The application provides an image processing method, apparatus and system. The method comprises parsing the code stream to obtain an encoding mode of a current image block to be reconstructed of the current image, a residual signal of the current image block to be reconstructed, and pixels in each reference reconstructed image block corresponding to the current image block to be reconstructed, wherein the encoding mode is an original resolution encoding mode or a down sampling encoding mode, and the current image block to be reconstructed corresponds to M reference reconstructed image blocks;determining a plurality of reference pixels of the current image block to be reconstructed according to the coding mode of the current image block to be reconstructed and pixels in the M reference reconstructed image blocks; generating a prediction signal from the plurality of reference pixels; a reconstruction signal is generated according to the prediction signal and the residual signal, and thecurrent image block to be reconstructed is reconstructed according to the reconstruction signal to obtain the current reconstructed image block. So that the reconstructed image block obtained by thedecoding end has better effect.

Description

technical field [0001] The present application relates to image processing technologies, and in particular to an image processing method, device and system. Background technique [0002] Digital video is video recorded in digital form. figure 1 Schematic representation of the digital video provided for this application, as figure 1 As shown, digital video consists of multiple frames of digital images. figure 2 Schematic illustrations of digital images provided for this application, such as figure 2 As shown, the image consists of 12*16 pixels, where each pixel is called a pixel, and 12*16 represents the image resolution. For example, the image resolution of 2K video is 1920*1080, and the image resolution of 4K video is 3840*2160. Usually the original video includes a large amount of data, which is not suitable for storage and transmission, and it is necessary to use efficient video compression coding technology to compress the original data. [0003] specifically, i...

Claims

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Application Information

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IPC IPC(8): H04N19/176H04N19/132H04N19/117H04N19/124H04N19/91
CPCH04N19/117H04N19/124H04N19/132H04N19/176H04N19/91H04N19/13
Inventor 张红杨海涛刘杉
Owner HUAWEI TECH CO LTD
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