Video encoding method, and video decoding method and device

A video coding and video frame technology, applied in the coding field, can solve the problem of low coding compression, and achieve the effect of removing correlation, reducing the number of bits, and small size

Active Publication Date: 2016-04-27
LENOVO (BEIJING) CO LTD
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Problems solved by technology

[0006] Embodiments of the present invention provide a video encoding and decoding method and device, which are used to solve t

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  • Video encoding method, and video decoding method and device
  • Video encoding method, and video decoding method and device

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Example Embodiment

[0044] An embodiment of the present invention provides a video encoding method, including: performing the following processing on each largest coding unit corresponding to a current video frame, wherein the size of the largest coding unit is a first size, and the first size is greater than 64* 64: Divide the largest coding unit into coding units according to a quad-tree structure; for each coding unit obtained according to different division modes, predict according to at least one coding mode through the prediction unit divided by the coding unit At least obtain the prediction residuals corresponding to the coding units in the at least one coding mode; for each coding unit obtained according to each division mode, the prediction residuals corresponding to the coding unit obtained by the transform unit Perform calculations to obtain the transformation coefficient matrix corresponding to the coding unit; wherein the transformation unit is obtained by dividing the coding unit, and...

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Abstract

The invention discloses a video encoding method, which is used for increasing video encoding compression ratio. The video encoding method comprises the steps of: setting size of each maximum encoding unit corresponding to a current video frame to be greater than 64*64; dividing each maximum encoding unit into encoding units according to a quadtree structure; for each encoding unit, at least acquiring a corresponding prediction residual in at least one encoding mode through a divided prediction unit; for each encoding unit, calculating a transformation coefficient matrix corresponding to a transformation unit according to at least one prediction residual through the transformation unit; and determining an optimal dividing method according to the prediction residuals and the transformation coefficient matrixes corresponding to the maximum encoding units when different dividing methods are adopted. The invention further discloses a corresponding video decoding method and a corresponding video decoding device.

Description

technical field [0001] The present invention relates to the field of encoding technology, in particular to a video encoding and decoding method and device. Background technique [0002] HEVC (High Efficiency Video Coding, High Efficiency Video Coding) is a new video compression standard that can replace the H.264 / AVC (a video coding standard) coding standard to a certain extent. [0003] HEVC can increase the compression efficiency of 1080P video by about 50%, which means that the quality of the video will increase a lot, and it can save a lot of network bandwidth. For consumers, they can enjoy higher quality video content . [0004] However, in the prior art, many applications such as remote desktop access, remote gaming, and cloud computing have become very common. An important feature of such applications is that information such as text and computer-generated images are mixed in natural videos. Information such as text and computer-generated images may often repeatedly...

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Application Information

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IPC IPC(8): H04N19/61H04N19/176H04N19/146H04N19/70H04N19/122H04N19/44
Inventor 姜东张学荣武亚强王哲鹏
Owner LENOVO (BEIJING) CO LTD
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