Image encoder method
US6535647B1 · kind B1 · utility
22Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system is presented for compression of hyperspectral imagery. Specifically, DPCM is used for spectral decorrelation, while an adaptive 2-D discrete cosine transform (DCT) (22) coding scheme is used for spatial decorrelation. Trellis coded quantization (23) is used to encode the transform coefficients. Side information and rate allocation strategies (36) are discussed. Entropy-constrained codebooks are designed using a modified version of the generalized Lloyd algorithm
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.