Invention Grant
US08290040B2 Method and system for estimating global motion in video sequences
有权
用于估计视频序列全局运动的方法和系统
- Patent Title: Method and system for estimating global motion in video sequences
- Patent Title (中): 用于估计视频序列全局运动的方法和系统
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Application No.: US10535420Application Date: 2003-11-18
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Publication No.: US08290040B2Publication Date: 2012-10-16
- Inventor: Yongmin Li , Li-Qun Xu , David G Morrison , Charles Nightingale , Jason Morphett
- Applicant: Yongmin Li , Li-Qun Xu , David G Morrison , Charles Nightingale , Jason Morphett
- Applicant Address: GB London
- Assignee: British Telecommunications public limited company
- Current Assignee: British Telecommunications public limited company
- Current Assignee Address: GB London
- Agency: Nixon & Vanderhye PC
- Priority: GB0227566.7 20021126
- International Application: PCT/GB03/05007 WO 20031118
- International Announcement: WO2004/049260 WO 20040610
- Main IPC: H04N7/12
- IPC: H04N7/12

Abstract:
The invention relates to estimating the global motion between frames of a motion-compensated inter-frame encoded video sequence, directly from the motion vectors encoded within the frames. For any particular frame, a motion estimation is determined from motion vectors direct from the frame's anchor frame to the frame in question. This motion estimation is then checked against pre-determined criteria, and where the criteria are not met, re-estimation along a different route is performed, using the bi-directional motion vectors contained within B-frames. A panoramic image generating method and system which makes uses of the global motion estimations thus obtained is also described.
Public/Granted literature
- US20060023786A1 Method and system for estimating global motion in video sequences Public/Granted day:2006-02-02
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