Offline motion description for video generation
US8804829B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2006 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Dec 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present motion description technique provides a technique for defining a motion description offline. The motion description can then later be extracted from a multimedia representation and adapted to various multimedia-related applications in a manner that not only reduces the processing for motion estimation but also provides high compression performance during an encoding/transcoding process. The motion description technique employs a motion alignment scheme utilizing a hierarchical model to describe motion data of each macroblock in a coarse-to-fine manner. Motion information is obtained for motion vectors of macroblocks for different partition modes. The resulting motion information is compressed based on correlations among spatially neighboring macroblocks and among partition modes to form the offline motion description.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.