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

Video decoding method, apparatus, computer equipment and storage medium

A video decoding and video technology, applied in the field of video coding and decoding, can solve problems such as lossy MV prediction

Active Publication Date: 2022-07-08
TENCENT AMERICA LLC
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other cases, for example, the MV prediction itself may be lossy due to round-off errors when computing the predictor from several surrounding MVs

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
  • Video decoding method, apparatus, computer equipment and storage medium
  • Video decoding method, apparatus, computer equipment and storage medium
  • Video decoding method, apparatus, computer equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] Please refer to figure 1 , the current block (101) includes samples that have been discovered by the encoder during the motion search process, which samples can be predicted from previous blocks of the same size that have been spatially offset. Additionally, the MV may be derived from metadata associated with at least one reference picture, rather than directly encoding the MV. For example, using the MV associated with any of the five surrounding samples of A0, A1 and B0, B1, B2 (102 to 106, respectively), the MV is derived from the metadata of the nearest reference picture (in decoding order) mv. In H.265, MV prediction may use the prediction values ​​of the same reference pictures that are also being used by neighboring blocks.

[0046] figure 2 is a simplified block diagram of a communication system (200) according to embodiments disclosed herein. The communication system (200) includes a plurality of terminal devices, which can communicate with each other throu...

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

The present application provides a method, an apparatus, a computer device and a storage medium, the method comprising: decoding encoding information of a current block (Current Block, CB) from an encoded video bitstream. Based on the inter prediction mode indicated by the coding information, an initial prediction of the samples of the subblock in the CB is generated. For one of the samples, a Motion Vector Refinement (MVR) is determined. The absolute value of the x-component or the y-component of the MVR is one of the following: (i)2 N1 , (ii)2 N1 and 2 M1 the sum or difference. where N1 and M1 are integers. A prediction revision is generated based on the MVR and the spatial gradient of the one sample, and a revised prediction is generated based on the initial prediction of the one sample and the prediction revision.

Description

[0001] incorporated by reference [0002] This application claims priority to U.S. Provisional Application No. 62 / 868,488, "Inter Prediction Refinement Calculation and Conditional Affine Model Compensation," filed June 28, 2019, and 2020 Priority to US Application Serial No. 16 / 898,059, "Method and Apparatus for Video Encoding and Decoding," filed June 10, the entire contents of which are incorporated herein by reference in their entirety. technical field [0003] This application relates to video codec technology. Background technique [0004] The background description provided herein is intended to present the context of this application as a whole. The extent to which the work of the presently named inventors is described in the Background section and in the various aspects of this specification is not indicative of prior art at the time of filing this application, and is never expressly or impliedly admitted. It is the prior art of the present application. [0005] 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
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/513H04N19/52H04N19/91H04N19/57
CPCH04N19/513H04N19/52H04N19/91H04N19/57H04N19/159H04N19/182H04N19/44H04N19/54H04N19/577H04N19/176H04N19/184
Inventor 李贵春李翔许晓中刘杉
Owner TENCENT AMERICA LLC