Method and system for determining optimal intra-frame prediction mode

A determination method and intra-prediction technology, which is applied in the field of video coding and can solve the problems of complex calculation method, time-consuming and large amount of calculation.

Active Publication Date: 2016-12-14
高前文
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[0006] An embodiment of the present invention provides a method and system for determining an optimal intra-frame prediction mod

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  • Method and system for determining optimal intra-frame prediction mode
  • Method and system for determining optimal intra-frame prediction mode

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[0088] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0089] see figure 1 , is a schematic flowchart of a method for determining an optimal intra-frame prediction mode provided by an embodiment of the present invention, as shown in figure 1 , the method for determining the optimal intra prediction mode provided in this embodiment includes:

[0090] S110: Determine the main sampling direc...

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Abstract

The invention discloses a method and a system for determining an optimal intra-frame prediction mode. The method for determining the optimal intra-frame prediction mode comprises the following steps: determining a main sampling direction of a current PU (Prediction Unit) according to texture information of the current PU or an optimal intra-frame prediction mode of an upper layer PU; if the main sampling direction of the current PU is determined, performing sparse and dense sampling on an angle mode of the current PU according to a variable sampling step length strategy to obtain a sampling angle mode; if the main sampling direction of the current PU is not determined, performing uniform sampling on the angle mode of the current PU according to a uniform sampling step length strategy to obtain a sampling angle mode; processing the sampling angle mode to obtain a candidate angle mode; and constructing a candidate intra-frame prediction mode set including the candidate angle mode, and determining an intra-frame prediction mode with a minimum rate-distortion cost from the candidate intra-frame prediction mode set as the optimal intra-frame prediction mode. Through the technical scheme, the optimal intra-frame prediction mode of the current PU can be determined rapidly and accurately.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a method and system for determining an optimal intra-frame prediction mode. Background technique [0002] With the in-depth development of information technology, there are more and more ways for people to obtain information. Among them, video, as a carrier of information, has become an important way for people to obtain information due to its advantages of image, accuracy and large amount of information. Because the amount of information contained in the video is too large, the huge amount of information will occupy a large amount of transmission and storage space, which is not conducive to the practical application of the video. In order to solve the above-mentioned problem of excessive video information, in the related art, a video coding technology is usually used to compress the video. [0003] Among them, effective video compression can be achieved by removing...

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Application Information

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IPC IPC(8): H04N19/11H04N19/132H04N19/593
CPCH04N19/11H04N19/132H04N19/593
Inventor 史方隆刚王标
Owner 高前文
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