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Intra-frame predication method and predication device

A technology of intra-frame prediction and prediction device, which is applied in the field of image processing, can solve the problem of high computational complexity, and achieve the effect of reducing computational complexity

Active Publication Date: 2015-06-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the planar mode prediction method uses bidirectional linear interpolation to calculate the prediction of each internal pixel point, and the computational complexity is relatively high.

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  • Intra-frame predication method and predication device

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Embodiment Construction

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

[0019] First, combine figure 1 A method 100 for intra prediction according to an embodiment of the present invention is described.

[0020] Such as figure 1 As shown, the method 100 includes: in S110, dividing the current block into a plurality of sub-blocks; in S120, for each sub-block, based on the prediction value of the neighboring pixels in the neighboring sub-block of the sub-block, pass the non-directional The intra-frame prediction method determine...

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Abstract

The embodiment of the invention provides an intra-frame predication method and a predication device. The intra-frame predication method comprises the steps of: dividing a current block into a plurality of subblocks; and for each subblock, determining the predication value of each pixel in the subblock in a non-directional intra-frame predication manner based on the prediction values of adjacent pixels in the adjacent subblocks of the subblock. According to the embodiment of the invention, by means of dividing the block in to the subblocks and performing non-directional intra-frame predication in the smaller subblocks, the computation complexity can be reduced.

Description

Technical field [0001] The present invention relates to the field of image processing, and more specifically, to an intra-frame prediction method and prediction device. Background technique [0002] With the explosive growth of people's demand for high-definition video transmission and storage, and the development of information network infrastructure such as the Internet, communication network, and broadcasting network is relatively lagging, network bandwidth has become a bottleneck. Therefore, there is an urgent need to improve the compression efficiency of video coding. [0003] The basic principle of video coding and compression is to use the correlation between space, time and codewords to remove redundancy as much as possible. The current popular approach is to use a block-based hybrid video coding framework to achieve video coding compression through steps such as prediction, transformation, quantization, and entropy coding. In this hybrid video coding framework, intra-fra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/503
Inventor 林永兵郑建铧
Owner HUAWEI TECH CO LTD