Method and apparatus for video coding

A video decoding and video technology, applied in the field of video encoding and devices, can solve the problems of low bit rate of video code stream, information loss, high bit rate of video code stream, etc.

Active Publication Date: 2021-03-16
TENCENT AMERICA LLC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, low QP values ​​result in more information in the remaining data, and encoded video streams require high bitrate levels
High QP values ​​cause loss of information in the remaining data, and encoded video streams require low bitrate levels

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 video coding
  • Method and apparatus for video coding
  • Method and apparatus for video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 A simplified block diagram of a communication system (100) according to embodiments disclosed herein is shown. A communication system (100) includes a plurality of terminal devices that can communicate with each other via, for example, a network (150). By way of example, a communication system (100) includes a first pair of end devices (110) and (120) interconnected by a network (150). exist figure 1 In an embodiment of the present invention, the first terminal device performs unidirectional data transfer to (110) and (120). For example, a terminal device (110) may encode video data (eg, a stream of video pictures captured by the terminal device (110)) for transmission to another terminal device (120) over the network (150). Encoded video data is transmitted in one or more encoded video streams. The terminal device (120) may receive encoded video data from the network (150), decode the encoded video data to restore video pictures, and display the video pict...

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

Aspects of the disclosure provide a method and apparatus for video coding. In some examples, the apparatus includes a receiving circuitry and a processing circuitry. The processing circuitry decodes,from a coded video bitstream, a syntax element for an adjusted version of an initial quantization parameter (QP) value at a picture level for a picture. The adjusted version is in a range with an upper boundary that is changed with a maximum QP value. Then, the processing circuitry determines the initial QP value of a segment (such as a slice, a tile, a group of tiles and the like) in the picturebased on the syntax element and determines a QP value for a block in the segment according to the initial QP value of the segment and adjustments associated with the block. Then, the processing circuitry performs an inverse quantization on quantized data of the block according to the determined QP value.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Patent Application No. 16 / 198,966, filed November 23, 2018, entitled "METHOD AND APPARATUS FOR VIDEOCODING," which claims the title "INITIAL SLICE LEVEL QP 62 / 739,312), the entire contents of which are incorporated herein by reference. technical field [0003] This application describes embodiments generally related to video encoding. Background technique [0004] The background description provided herein is for the purpose of generally presenting the disclosure. To the extent described in this Background section, neither the work of the presently named inventor nor any aspect of this description that would otherwise qualify as prior art at the time of filing is admitted to be prior art to the present invention, either expressly or impliedly. technology. [0005] Quantizer parameter (QP) is one of the parameters used to adjust the video quality and bit rate level. For example, low QP v...

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
IPC IPC(8): H04N19/124H04N19/196H04N19/172H04N19/70
CPCH04N19/124H04N19/159H04N19/172H04N19/197H04N19/70H04N19/91
Inventor 李翔许晓中刘杉
Owner TENCENT AMERICA LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap