Method of visual progressive coding
US6327392A · kind A · utility
60Cited by
9References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jan 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of visual progressive coding for an image includes transforming the image into a set of transform coefficients; dividing the set of transform coefficients into bands, wherein each band includes a group of transform coefficients having the same visual characteristics; assigning a set of active weights to each band; generating coding units; identifying a set of candidate coding units; determining the significance of each candidate coding unit; determining the visual significance of each candidate coding unit; encoding those candidate coding units having the largest visual significance; and updating the active weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.