Motion compensated interframe prediction method based on adaptive motion vector interpolation
US6058212A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1997 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Jan 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method of interpolating the motion vectors at all pixel positions in a frame on the basis of the motion vectors at plural predetermined representative points to perform motion compensated prediction of moving pictures, there is adaptively selected one of a method for dividing the frame into plural areas and interpolating the motion vector every area is selected from a conventional method of linearly interpolating a motion vector by using all the surrounding representative points, a method of separately detecting motion vectors for an area, a method of further dividing an area into plural subareas, a method of temporarily converting the values of the motion vectors at the representative points into values to be used for the motion vector interpolation, and a method of setting a fixed value as a prediction value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.