Image coding apparatus and method utilizing separable transformations
US5148498A · kind A · utility
174Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1990 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Aug 1, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0202
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image coding apparatus and method are disclosed. The method and apparatus are applicable to coding any array of arbitrary dimension. The apparatus utilizes FIR filters which generate three or more sets of coefficients from linear arrays generated from the array being coded. Each set of coefficients represents spatial frequency information of different frequencies. The filters utilize coefficient sets which are preferrably orthogonal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.