Patent · US Active

Spatiotemporal prediction for bidirectionally predictive (B) pictures and motion vector prediction for multi-picture reference motion compensation

US9185427B2 · kind B2 · utility

80Cited by

182References

23Claims

0Family size

Assignee

MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

Alexandros Tourapis · Milpitas, US
Shipeng Li · Princeton, US
Feng Wu · Beijing, CN

Key dates

Filing date	Sep 30, 2014
Grant date	Nov 10, 2015
Priority date	—
Expiry date	Sep 30, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/87
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Several improvements for use with Bidirectionally Predictive (B) pictures within a video sequence are provided. In certain improvements Direct Mode encoding and/or Motion Vector Prediction are enhanced using spatial prediction techniques. In other improvements Motion Vector prediction includes temporal distance and subblock information, for example, for more accurate prediction. Such improvements and other presented herein significantly improve the performance of any applicable video coding system/logic.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.