Fast search method for motion estimation
US6563874B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video compression method of estimating a motion vector representative of a difference between a reference frame and a current frame is described. Typically, both the reference frame and the current frame include background and foreground data. In the method a block of the current frame is selected for analysis, and a determination is made whether the block selected is a foreground block or a background block. If the block is a foreground block, then it is compared with predetermined search points in the reference frame. On the other hand, if the block is a background block, it is compared with predetermined search points in only a portion of the reference frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.