Coding method, decoding method, coding apparatus, decoding apparatus, image processing system, coding program, and decoding program
US7643559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Aug 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For the purpose of coding or decoding motion information in a picture with a small overhead, a coding method of performing compression coding of a moving picture by motion compensated prediction is configured to have a motion compensated prediction step (processing by motion detector 2, motion compensator 5, spatial predictor 9, etc.) of performing the motion compensated prediction while assigning one or more motion vectors (e.g., up to two motion vectors) in units of sub-blocks obtained by sub-dividing each of macroblocks resulting from division of each frame of the moving picture; and an assignment information coding step (processing by variable length encoder 23 and others) of outputting information about an assignment situation of the one or more motion vectors to the sub-blocks in a multiplexed form on a bitstream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.