Supercharge Your Innovation With Domain-Expert AI Agents!

Method and apparatus for motion compensation for 360 video coding

一种已编码、运动矢量的技术，应用在数字视频信号修改、图像通信、电气元件等方向，能够解决运动模型没有利用等问题

Pending Publication Date: 2022-03-04
TENCENT AMERICA LLC
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These motion models do not take advantage of certain techniques such as motion vector prediction

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 motion compensation for 360 video coding
  • Method and apparatus for motion compensation for 360 video coding
  • Method and apparatus for motion compensation for 360 video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] A 360 video compression system may operate by first using a projection such as equirectangular projection, cubic projection, etc. to map a 360 video sequence into a sequence of planar pictures, and the planar sequence thereof may be subjected to compression. Compression techniques for planar images and video are well known, but are optimized for input material where the correlation of each sample is approximately similar and where there are no known geometric distortions, or at least need not be considered geometric distortion. However, the geometric inaccuracies and errors introduced by the projection step render a planar image such that some regions and samples of the planar representation are less relevant than others because they represent regions and samples on the sphere from which they are projected. relatively small surface area. Furthermore, in some projections, the geometry of a sample in the projection may differ from the geometry of the corresponding sample...

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 of decoding an encoded video sequence in a decoder into a series of reconstructed pictures representing a projection of a non-planar surface on a planar surface is provided. The method includes: generating an ordered candidate list including a plurality of candidate motion vectors for a current prediction unit (PU) in reconstruction by: ordering the plurality of candidate motion vectors in the ordered candidate list based on geometric characteristics including a projection of the current PU and based on a position of the current PU in the projection; the index is decoded; referring to the generated ordered candidate list using the decoded index to select one of a plurality of candidate motion vectors from the generated ordered candidate list; generating a prediction signal using one of the selected plurality of candidate motion vectors; and reconstructing the current PU using the generated prediction signal.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Patent Application Serial No. 16 / 396,114, filed April 26, 2019, in the U.S. Patent and Trademark Office, which is hereby incorporated by reference in its entirety. technical field [0003] Methods and apparatus consistent with the embodiments relate to image and video encoding and decoding, and more particularly, to methods and apparatus for motion compensation for 360 video encoding. Background technique [0004] Video encoding and decoding using inter-picture prediction with motion compensation has been known for decades. Uncompressed digital video may include a series of pictures, each picture having spatial dimensions of, for example, 1920x1080 luma samples and associated chrominance samples. The series of pictures may have a fixed or variable picture rate (also informally referred to as frame rate), eg, 60 pictures per second or 60 Hz. Uncompressed video has significant b...

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): H04N19/513H04N19/573H04N19/105H04N19/85H04N19/172
CPCH04N19/105H04N19/167H04N19/176H04N19/513H04N19/597H04N19/573H04N19/172H04N19/85
Inventor 史蒂芬·文格尔刘杉
Owner TENCENT AMERICA LLC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com