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
CN107925758BActive Publication Date: 2022-01-25LG ELECTRONICS INC
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LG ELECTRONICS INC
Publication Date
2022-01-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More