Inter-frame prediction method and device in video coding system

A video decoding and predefined technology, applied in the field of video coding, can solve the problems of increased transmission cost and storage cost, and achieve the effect of eliminating or reducing the amount of data, improving the efficiency of inter-frame prediction, and improving the overall coding efficiency.

Active Publication Date: 2022-06-03
LG ELECTRONICS INC
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  • Abstract
  • Description
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Problems solved by technology

Therefore, when image data is transmitted using a medium such as a conventional wired / wireless broadband line or stored using an existing storage medium, its transmission cost and storage cost increase

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  • Inter-frame prediction method and device in video coding system
  • Inter-frame prediction method and device in video coding system
  • Inter-frame prediction method and device in video coding system

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Embodiment Construction

[0041] The present invention may be modified in various forms, and specific embodiments thereof will be described and illustrated in the accompanying drawings. However, the examples are not intended to limit the invention. The terms used in the following description are used to describe specific embodiments only, but are not intended to limit the present invention. The representation of the singular includes the representation of the plural as long as 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 a combination thereof used in the following description, and, therefore, should be understood not to preclude the presence or addition of one or more Possibility of different features, numbers, steps, operations, elements, components or combinations thereof.

[0042] On the other hand, in order to facilitate the explanation of different specific fun...

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Abstract

The video decoding method performed by the decoding device according to the present invention includes the steps of: deriving a control point (CP) for a current block; obtaining a motion vector for the CP; deriving a sample unit motion in the current block based on the obtained motion vector vector; and deriving a prediction sample for the current block based on the sample unit motion vector. According to the present invention, not only when an image in a current block is plane-shifted but also when various image distortions exist, inter prediction can be efficiently performed by a sample unit motion vector.

Description

technical field [0001] The present invention relates to a video coding technology, and more particularly, to an inter-frame prediction method and apparatus in a video coding system. Background technique [0002] Demands for high-resolution, high-quality images such as HD (High Definition) images and UHD (Ultra High Definition) images are increasing in various fields. Because image data has high resolution and high quality, the amount of information or bits to be transmitted increases relative to conventional image data. Therefore, when image data is transmitted using a medium such as a conventional wired / wireless broadband line or stored using an existing storage medium, its transmission cost and storage cost increase. [0003] Accordingly, there is a need for efficient image compression techniques for efficiently transmitting, storing, and reproducing information for high-resolution and high-quality images. SUMMARY OF THE INVENTION [0004] technical purpose [0005] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/176H04N19/503H04N19/70H04N19/124
CPCH04N19/105H04N19/124H04N19/176H04N19/182H04N19/503H04N19/513H04N19/56H04N19/66H04N19/70H04N19/91
Inventor 张炯文孙银庸具文模朴胜煜全勇俊
Owner LG ELECTRONICS INC
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