Image coding using transform index

An image encoding and image decoding technology, applied in the field of image encoding, can solve the problem of easy increase in transmission and storage costs, and achieve the effects of minimizing interference, maintaining encoding efficiency, and optimizing encoding efficiency.

Pending Publication Date: 2021-12-28
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if image / video data is transmitted via a medium such as an existing wired / wireless broadband line or stored in a conventional storage medium, the cost of transmission and storage tends to increase

Method used

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  • Image coding using transform index
  • Image coding using transform index
  • Image coding using transform index

Examples

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Embodiment Construction

[0039] The present disclosure may be modified in various forms, and specific embodiments thereof will be described and illustrated in the drawings. However, these embodiments are not intended to limit the present disclosure. Terms used in the following description are for describing specific embodiments only, and are not intended to limit the present disclosure. A singular expression includes a plural expression as long as it is clearly interpreted differently. Terms such as "comprising" and "having" are intended to indicate that there are features, numbers, steps, operations, elements, components or combinations thereof used in the following description, so it should be understood that the existence or addition of one or more different features, quantities, steps, operations, elements, components or combinations thereof.

[0040] In addition, each configuration in the drawings described in this document is independently illustrated for explaining functions that are features...

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Abstract

An image decoding method according to the present document comprises the steps of: receiving image information including residual information for a current block; and generating residual samples of the current block on the basis of the residual information, wherein the residual information includes information on transform coefficients of the current block, and the residual samples are generated from the information on the transform coefficients on the basis of low-frequency non-separable transform (LFNST) index information.

Description

technical field [0001] The present disclosure relates to image coding techniques, and more particularly, to image coding using transform indexes. Background technique [0002] Recently, demands for high-resolution, high-quality images / videos such as 4K or 8K ultra-high-definition (UHD) images / videos are increasing in various fields. As image / video resolution or quality becomes higher, relatively more information or bits are sent compared to traditional image / video data. Therefore, if image / video data is transmitted via a medium such as an existing wired / wireless broadband line or stored in a conventional storage medium, the cost of transmission and storage tends to increase. [0003] Furthermore, there is growing interest in and demand for virtual reality (VR) and artificial reality (AR) content, as well as immersive media such as holograms; and images / videos exhibiting image / video characteristics different from actual images / videos ( For example, broadcasting of game imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/60H04N19/159H04N19/132H04N19/70H04N19/176H04N19/18H04N19/119
CPCH04N19/159H04N19/18H04N19/70H04N19/176H04N19/122H04N19/91H04N19/12H04N19/132H04N19/119H04N19/61H04N19/593H04N19/11H04N19/60
Inventor 南廷学林宰显具文模金昇焕
Owner LG ELECTRONICS INC
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