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Adaptive sampling point compensation coding method and device, and method and device for decoding video code stream

A compensation coding and adaptive technology, applied in the field of video coding, can solve the problem of low coding compression

Active Publication Date: 2016-06-01
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for adaptive sample point compensation coding and decoding video code streams, which are used to solve the technical problem of relatively low coding compression when coding videos with a large amount of repetitive information

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  • Adaptive sampling point compensation coding method and device, and method and device for decoding video code stream
  • Adaptive sampling point compensation coding method and device, and method and device for decoding video code stream

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Embodiment Construction

[0038] The adaptive sample point compensation coding method in the embodiment of the present invention includes: when performing adaptive sample point compensation coding on a video frame, dividing M bands according to the value range of the pixel value, and making the M bands different from the original The largest coding unit corresponds to the processed largest coding unit, so that pixels included in the original largest coding unit and the processed largest coding unit are respectively classified into corresponding bands; wherein, the original largest coding unit and the processed The size of the largest coding unit is the first size, the first size is larger than 64*64, the original largest coding unit is obtained by dividing the video frame, and the processing largest coding unit is the original largest coding unit Obtained after processing; encoding and reconstruction, and then deblocking filtering For the M bands containing the original largest coding unit and the M ban...

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Abstract

The invention discloses an adaptive sampling point compensation coding method for improving the video coding compression ratio. The method comprises the following steps: M bands are divided according to a value range of pixel values, and pixel points contained in an original maximum coding unit and a processing maximum coding unit are respectively classified into the corresponding bands, wherein the dimension of the original maximum coding unit and the dimension of the processing maximum coding unit are both a first dimension greater than 64*64; for the M bands containing the original maximum coding unit and the M bands containing the processing maximum coding unit, an average value of the pixel values of the pixel points contained in each band is calculated; according to two average values corresponding to each band, an offset corresponding to each band is calculated, and the maximum offset is determined from the offsets; N continuous bands are selected from the M bands; and at least N offsets corresponding to the N bands are written into a video code stream formed by the processing maximum coding unit. The invention further discloses a corresponding decoding method and device.

Description

technical field [0001] The invention relates to the technical field of video coding, in particular to a method and device for adaptive sample point compensation coding and decoding video streams. 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 comput...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/13H04N19/122H04N19/182H04N19/86
Inventor 姜东张学荣武亚强
Owner LENOVO (BEIJING) CO LTD