Image coding/decoding apparatus utilizing sub-band encoding
US6128344A · kind A · utility
7Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1999 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Apr 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image coding/decoding apparatus offers a visually high quality image at a very low bit rate. The image is divided into images for individual regions using its shape information. Each region is made into rectangle blocks by an extrapolation process, whereby each region can be sub-band coded. Finally, multiple extrapolated images which were formed by the extrapolating process, are appropriately coded or quantized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.