Image coder and image coding method
US6631214B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Feb 25, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image coding method includes the steps of synthesizing a prediction image by performing motion compensation, and multiplexing information related to a difference image between an input image and the prediction image, and information related to motion vectors estimated in performing the motion compensation. The motion compensation is sometimes performed using a positive rounding method, and is sometimes performed using a negative rounding method. Information related to a rounding method used in performing the motion compensation is multiplexed with the information related to the difference image and the information related to the motion vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.