Image decompression from transform coefficients
US7181077B2 · kind B2 · utility
3Cited by
17References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2005 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | May 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image decompressing system includes the processes of: a) determining a size of a decompressed image; b) determining a decomposition level to which decomposition-level-type inverse wavelet transform is performed; and c) decompressing given wavelet transform coefficients to the decomposition level determined by the step b), wherein the step b) determines the decomposition level such that wavelet transform coefficients in the thus-determined decomposition level have a size equal to or nearest to the size of the decomposed image determined by the step a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.