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Inter-frame prediction method and device in video coding system

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

Active Publication Date: 2022-01-25
LG ELECTRONICS INC
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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

[0031] The present invention can be modified in various forms, and specific embodiments will be described and shown in the accompanying drawings. However, the examples are not intended to limit the invention. Terms used in the following description are for describing specific embodiments only, but are not intended to limit the present invention. A singular expression includes a plural expression 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 combinations thereof used in the following description, and therefore, it should be understood that the presence or addition of one or more Possibility of different features, numbers, steps, operations, elements, components or combinations thereof.

[0032] On the other hand, elements in the drawings described in the present invention are independently drawn for convenience in explaining differe...

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Abstract

According to the present invention, a video decoding method performed by a decoding device includes the steps of: deriving a control point (CP) of a current block; acquiring a motion vector of the CP; deriving a sampling unit motion in the current block based on the acquired motion vector vector; deriving prediction samples of the current block based on the sample unit motion vector; and generating restoration samples based on the prediction samples, wherein the coordinates of the lower right sampling position of the current block are (0,0), and the coordinates of CP0 among the CPs are (0 ,0). According to the present invention, even when the image in the current block is planarly moved and the image is changed differently, inter prediction can be efficiently performed by sampling unit motion vectors, and since the motion vector of the CP can be derived based on the already decoded neighboring blocks , so the information about the motion vector of the CP and the data amount of the residual signal of the current block can be removed or reduced, and the overall coding efficiency can be improved.

Description

technical field [0001] The present invention relates to a video coding technology, and more specifically, to an inter-frame prediction method and device 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] Therefore, there is a need for an efficient image compression technique for efficiently transmitting, storing, and reproducing information of high-resolution and high-quality images. Contents of the invention [0004] technical purpose [0005] The ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/176H04N19/503H04N19/517
CPCH04N19/105H04N19/503H04N19/176H04N19/517H04N19/182H04N19/159H04N19/44H04N19/513
Inventor 孙银庸具文模张炯文朴胜煜全勇俊
Owner LG ELECTRONICS INC
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