摘要 |
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. |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY;LI, YONGMIN;XU, LI-QUN;MORRISON, DAVID, GEOFFREY;NIGHTINGALE, CHARLES;MORPHETT, JASON |
发明人 |
LI, YONGMIN;XU, LI-QUN;MORRISON, DAVID, GEOFFREY;NIGHTINGALE, CHARLES;MORPHETT, JASON |