Method and system for estimating global motion in video sequences
US8494051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2003 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Aug 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/527
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Global motion between frames of a motion-compensated inter-frame encoded video sequence is estimated directly from the motion vectors encoded within the frames. For any particular frame, the motion vectors are first decoded, and a finite number of sets of vectors are selected. An affine or other geometrical transform is then used to generate a motion estimation for each set, and then the least median squared error present in each motion estimation is calculated for each estimation. The motion estimation with the smallest least median squared error is then selected as being representative of the global motion in the image of the frame. A panoramic image generating method and system makes uses of the global motion estimations thus obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.