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

Method for scalably encoding and decoding video signal

A technology of video signal and offset information, which is applied in the field of scalable encoding and decoding, and can solve the problems of reducing encoding efficiency and deteriorating image quality.

Active Publication Date: 2010-05-19
LG ELECTRONICS INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although it is ensured that a portion of a sequence of images encoded by the scalable MCTF coding scheme can be received and processed into a video with a certain level of image quality as described above, there is still the problem that the image quality is significantly degraded if the bit rate is reduced
[0018] Also in case (ii), if figure 2 As shown in (a), the enhancement layer and the base layer may be out of phase
[0019] That is, the phase of the base layer may change during the down-sampling process that generates the base layer and during the up-sampling process of the inter-layer prediction method, so the base layer is out of phase with the enhancement layer, thereby reducing the coding efficiency

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 for scalably encoding and decoding video signal
  • Method for scalably encoding and decoding video signal
  • Method for scalably encoding and decoding video signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] image 3 It is a block diagram of a video signal encoding device capable of implementing the scalable video signal encoding method according to the present invention.

[0034] image 3The shown video signal encoding device includes an enhancement layer (EL) encoder 100, a texture encoding unit 110, a motion encoding unit 120, a multiplexer (or multiplexer) 130, a downsampling unit 140, and a base layer (BL) encoding device 150. The down-sampling unit 140 generates an enhancement layer directly from or by down-sampling the input video signal, and forms a base layer signal by down-sampling the input video signal or the enhancement layer signal according to a specific scheme. The particular scheme depends on the application or device receiving the layers; and is thus a matter of design choice. The EL encoder 100 encodes the enhancement layer si...

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

In one embodiment, decoding of a video signal includes predicting at least a portion of a current image in a current layer based on at least a portion of a base image in a base layer and offset information. The offset information indicates an offset based on at least one pixel in the current image and a corresponding at least one pixel in the base image. For example, the offset information may represent a position offset between at least one sample in the current image and at least one sample in an up-sampled portion of the base image.

Description

technical field [0001] The invention relates to scalable encoding and decoding of video signals. Background technique [0002] It is difficult to distribute the high bandwidth required by TV signals to digital video signals transmitted and received wirelessly by mobile phones or notebook computers. It is foreseeable that the same difficulty will occur on mobile TV sets and portable computers that will be widely used in the future. Therefore, the video compression standards used by these mobile devices should have high video signal compression efficiency. [0003] These mobile devices have so many processing and display capabilities that they should be equipped with many forms of compressed video data. This means that multiple different qualities of video data with different combinations of variables such as frames per second sent, resolution and bits per pixel should be provided based on one video source. This places a large burden on content providers. [0004] Due to t...

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 Patents(China)
IPC IPC(8): H04N7/24
Inventor 全柄文朴胜煜朴志皓尹度铉朴玄旭
Owner LG ELECTRONICS INC