Coded image recording medium
US6643409B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/94
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording medium has recorded thereon information related to coded data of an image sequence, which is a set of coded frame information of a plurality of frames of an image sequence. The coded frame information includes information related to a difference image between an image of a current frame and a prediction image of the current frame, the prediction image being synthesized by performing motion compensation, information related to motion vectors estimated in performing the motion compensation, and rounding method information specifying a rounding method used in performing the motion compensation. The rounding method specified by the rounding method information is used for pixel value interpolation in performing the motion compensation, and specifies one of a positive rounding method and a negative rounding method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.