Motion vector reduction in television images
US4862259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/577
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for reducing the number of motion vectors associated with a digital television image comprises a vector filter, a vector calculator and a vector processor for deriving for each block of pixels within the television image a plurality of motion vectors representing the most common motion vectors of pixels in the block, each of the plurality of motion vectors having associated with it a figure of merit based upon the weighted absolute difference of the motion vectors of pixels in the block, and a vector reducer for associating with the plurality of motion vectors, a further motion vector for the same position from the previous field and a further motion vector for the same position from the next field, each of said further motion vectors having associated with it a figure of merit, and for selecting a smaller plurality of motion vectors from the plurality of motion vectors and the further motion vectors in dependence on the figures of merit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.