Patent · US Active

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

US8374245B2 · kind B2 · utility

86Cited by

175References

39Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

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

Key dates

Filing date	Sep 20, 2006
Grant date	Feb 12, 2013
Priority date	—
Expiry date	Oct 30, 2030

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.