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Intra prediction method on basis of mpm list and apparatus therefor

An intra-frame prediction and intra-frame prediction mode technology, applied in the field of image coding, can solve the problems of easy increase in transmission and storage costs, and achieve the effects of improving intra-frame prediction efficiency, improving efficiency, and improving image coding efficiency

Pending Publication Date: 2021-12-07
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Intra prediction method on basis of mpm list and apparatus therefor
  • Intra prediction method on basis of mpm list and apparatus therefor
  • Intra prediction method on basis of mpm list and apparatus therefor

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Embodiment Construction

[0072] 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 unless it is clearly understood 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.

[0073] In addition, the respective configurations of the drawings described in the present disclosure are independent illustrations for explain...

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Abstract

An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: obtaining intra prediction information including at least one of MPM flag information, MRL index information, and planner flag information from a bitstream; checking the MPM flag information; checking the MRL index information on the basis of a case where the MPM flag information indicates that the MRL index information is checked; checking the planner flag information on the basis of a case where a value of the MRL index information is 0; deriving an intra prediction mode for a current block on the basis of the check for the planner flag information; deriving prediction samples for the current block on the basis of the intra prediction mode for the current block; and generating a reconstructed picture on the basis of the prediction samples.

Description

technical field [0001] The present disclosure relates to image coding technology, and more particularly, to an intra prediction method and device thereof based on a Most Probable Mode (MPM) list in an image coding system. 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] In addition, 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 that exhibit image / video characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/11H04N19/593H04N19/105H04N19/70H04N19/132
CPCH04N19/70H04N19/593H04N19/11H04N19/105H04N19/132H04N19/159H04N19/176H04N19/46
Inventor 李翎林宰显许镇崔璋元金昇焕
Owner LG ELECTRONICS INC