Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for encoding/decoding image

A current block and candidate area technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem that the channel bandwidth cannot keep up with the rapid growth of multimedia data volume

Pending Publication Date: 2020-11-17
IND ACAD COOP GRP OF SEJONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development of channel bandwidth may not keep up with the rapid growth of multimedia data volume

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for encoding/decoding image
  • Method and apparatus for encoding/decoding image
  • Method and apparatus for encoding/decoding image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0254] The pixel pDsY[x][y] of the downsampled luma block can be derived based on the corresponding pixel pY[2*x][2*y] of the luma block and neighboring pixels (x=0..nTbW-1, y=0 ..nTbH-1). A neighboring pixel may mean at least one of a left neighboring pixel, a right neighboring pixel, a top neighboring pixel, and a bottom neighboring pixel of the corresponding pixel. For example, the pixel pDsY[x][y] can be derived based on Equation 11 below.

[0255] [Formula 11]

[0256] pDsY[x][y]=(pY[2*x][2*y-1]+pY[2*x-1][2*y]+4*pY[2*x][2*y] +pY[2*x+1][2*y]+pY[2*x][2*y+1]+4)>>3

[0257] However, there may be cases where the left / top neighbors of the current block are not available. When the left adjacent area of ​​the current block is not available, the pixel pDsY[0][y] of the downsampled luma block can be derived based on the corresponding pixel pY[0][2*y] of the luma block and the neighbors of the corresponding pixel (y=1...nTbH-1). Neighboring pixels may mean at least one of top ...

Embodiment 2

[0272] A pixel pDsY[x][y] of a downsampled luma block can be derived based on the corresponding pixel pY[2*x][2*y] of the luma block and the neighbors of the corresponding pixel (x=0..nTbW−1, y=0..nTbH-1). A neighboring pixel may mean at least one of a bottom neighboring pixel, a left neighboring pixel, a right neighboring pixel, a lower left neighboring pixel, and a lower right neighboring pixel of the corresponding pixel. For example, the pixel pDsY[x][y] can be derived based on Equation 16 below.

[0273] [Formula 16]

[0274] pDsY[x][y]=(pY[2*x-1][2*y]+pY[2*x-1][2*y+1]+2*pY[2*x][2* y]+2*pY[2*x][2*y+1]+pY[2*x+1][2*y]+pY[2*x+1][2*y+1]+4 )>>3

[0275] However, when the left neighbor of the current block is not available, the pixel pDsY[0][y] of the downsampled luma block can be derived based on the corresponding pixel pY[0][2*y] of the luma block and its bottom neighbor ] (y=0..nTBH-1). For example, the pixel pDsY[0][y] (y=0..nTBH-1) can be derived based on Equation 17 ...

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

PUM

No PUM Login to View More

Abstract

A method and an apparatus for encoding / decoding an image according to the present invention can determine a reference area that is a pre-reconstructed area spatially adjacent to a current block on thebasis of reference information for specifying the position of a reference area used for predicting a current block and can predict the current block on the basis of the reference area.

Description

technical field [0001] The present disclosure relates to video encoding / decoding methods and devices. Background technique [0002] Recently, the demand for multimedia data such as moving pictures is rapidly increasing in the Internet. However, the development of channel bandwidth may not keep up with the rapid growth of multimedia data volume. Therefore, VCEG (Video Coding Experts Group) of ITU-T and Moving Picture Experts Group (MPEG) of ISO / IEC, which are international standardization organizations, have established the video compression standard HEVC (High Efficiency Video Coding) Version 1 in February 2014. [0003] HEVC defines methods such as intra prediction, inter prediction, transform, quantization, entropy coding, and in-loop filters. Contents of the invention [0004] technical problem [0005] The present disclosure relates to video encoding / decoding methods and devices. Its purpose is to provide an inter / intra prediction method and device. [0006] The p...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/119H04N19/14H04N19/107H04N19/176
CPCH04N19/119H04N19/176H04N19/105H04N19/52H04N19/46H04N19/14H04N19/107H04N19/44
Inventor 文柱禧元栋载河在玟任星元
Owner IND ACAD COOP GRP OF SEJONG UNIV