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Video or image coding based on mapping of luma samples and scaling of chroma samples

A technology of image coding and image decoding, applied in the field of video or image coding, which can solve the problems of increasing transmission cost and storage cost of storing image/video data, so as to improve subjective/objective visual quality, increase coding efficiency, and minimize resource/cost effect

Active Publication Date: 2022-04-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As image / video data has high resolution and high quality, the amount of information or the amount of bits to be transmitted increases relative to existing image / video data, therefore, using a medium such as an existing wired / wireless broadband line or an existing storage medium Sending image data or storing image / video data using existing storage media increases transmission costs and storage costs

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  • Video or image coding based on mapping of luma samples and scaling of chroma samples
  • Video or image coding based on mapping of luma samples and scaling of chroma samples
  • Video or image coding based on mapping of luma samples and scaling of chroma samples

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[0056] This document may be modified in various forms, specific embodiments thereof will be described and shown in the drawings. However, these embodiments are not intended to limit this document. The terminology used in the following description is for describing particular embodiments only and is not intended to limit this document. Singular expressions include plural expressions as long as they are clearly read differently. Terms such as "comprising" and "having" are intended to indicate the presence of features, numbers, steps, operations, elements, components or combinations thereof used in the following description, so it should be understood that the presence or addition of one or more different Possibility of features, quantities, steps, operations, elements, components or combinations thereof.

[0057] In addition, each configuration in the drawings described in this document is independently shown for the convenience of describing different characteristic functions...

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Abstract

According to the disclosure of the present document, the granularity of the value of the chroma residual scaling factor may be controlled by explicit signaling of information about the value of the chroma residual scaling factor. In addition, chroma residual scaling may be performed efficiently by implicit derivation of information about the value of the chroma residual scaling factor.

Description

technical field [0001] The techniques of this document relate to video or image coding based on mapping of luma samples and scaling of chroma samples. Background technique [0002] Recently, demands for high-resolution, high-quality images / videos such as 4K or 8K or higher ultra-high-definition (UHD) images / videos have increased in various fields. As image / video data has high resolution and high quality, the amount of information or the amount of bits to be transmitted increases relative to existing image / video data, therefore, using a medium such as an existing wired / wireless broadband line or an existing storage medium Sending image data or storing image / video data using existing storage media increases transmission costs and storage costs. [0003] In addition, interest in and demand for immersive media such as virtual reality (VR) and artificial reality (AR) content or holograms have recently increased, and images / videos (for example, game images) that have characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/117H04N19/132H04N19/137H04N19/186H04N19/44H04N19/70
CPCH04N19/117H04N19/132H04N19/137H04N19/186H04N19/44H04N19/70H04N19/176H04N19/82H04N19/96H04N19/30H04N19/159H04N19/172H04N19/1887
Inventor 赵杰金昇焕
Owner LG ELECTRONICS INC