Video motion vector detection including rotation and/or zoom vector generation
US6236682A · kind A · utility
31Cited by
11References
58Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 8, 1993 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Motion vectors from one video frame to another are detected by segmenting a present frame of video data into plural blocks and then comparing a block in the present frame to a corresponding block in a preceding frame to detect rotational and zoom movement of the present block relative to the preceding block, in addition to rectilinear movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.