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Video Compression Method for Adaptively Adjusting Chroma Distortion Weight Factors According to Video Content

A technology of self-adaptive adjustment and video content, applied in color TV parts, digital video signal modification, color TV, etc., can solve problems such as distortion and low compression efficiency

Active Publication Date: 2019-12-31
北京博雅睿视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] For many new types of data encountered in various new applications, different image regions have different properties, and there are different degrees of distortion after encoding with different modes
These distortions will have varying degrees of impact on the mode selection of subsequent coding units. Using a constant chroma distortion weight factor for the luma and chroma components of different modes and even sub-modes will lead to the inability to select the best mode based on the RDCost mode selection mechanism. optimal mode, resulting in inefficient compression

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  • Video Compression Method for Adaptively Adjusting Chroma Distortion Weight Factors According to Video Content
  • Video Compression Method for Adaptively Adjusting Chroma Distortion Weight Factors According to Video Content
  • Video Compression Method for Adaptively Adjusting Chroma Distortion Weight Factors According to Video Content

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Embodiment Construction

[0133] In order to be able to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0134] The most basic and unique technical feature of the encoding method of the present invention is a distortion calculation method based on the RDCost encoding mode selection mechanism. According to the video content characteristics of each encoding block, different modes and sub-modes are adaptively adopted. Chroma distortion weight factor α mi , That is, α in formula (2) is not a constant, but is determined by the category of video content characteristics ci, 1≤i≤n and coding mode mj,1≤j≤J (or its sub-mode mjk, 1≤j≤J, 1≤k≤Kj) determined variable α cimj (Or α cimjk ).

[0135] Such as figure 1 As shown, according to one aspect of the present invention, there is provided an encoding method for data compression of a video data set containing chrominance components, including the following steps:...

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Abstract

The invention relates to a video compression method for adaptively adjusting chroma distortion weight factors according to video content, which includes dividing the video content into multiple categories according to the characteristics of the video content and preset classification conditions; presetting multiple encoding modes and Encoding sub-modes in each encoding mode; matching encoding sub-modes for each category of video content; matching chroma distortion weighting factors for each encoding sub-mode; according to the category of video content, using the matching encoding sub-mode and matching chroma The distortion weighting factors are encoded. The encoding mode adopted in the present invention is more helpful for the RDCost-based encoding mode selection mechanism to select the optimal encoding mode, effectively improving the overall encoding efficiency.

Description

Technical field [0001] The invention relates to the technical field of video compression, in particular to a video compression method for adaptively adjusting chrominance distortion weight factors according to video content. Background technique [0002] In recent years, as human society has entered the era of artificial intelligence, big data, virtual reality, augmented reality, mixed reality, cloud computing, mobile computing, cloud-mobile computing, 4G / 5G communications, ultra high definition (4K) and ultra high definition (8K) The volume of multimedia data such as traditional video with image resolution, surveillance video, entertainment media, social media, medical images, consumer images / videos, and various new forms of data is increasing rapidly, and has become Internet big data The main form of data. [0003] With the widespread application of multimedia big data, how to perform ultra-high compression ratio and extremely high-quality data compression technology for multime...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N19/103H04N19/154H04N19/157H04N19/48
CPCH04N9/643H04N19/103H04N19/154H04N19/157H04N19/48
Inventor 赵利平林涛胡珂立沈士根周海平肖立国
Owner 北京博雅睿视科技有限公司