Method and apparatus for performing spatial-to-frequency domain transform
US7046855B2 · kind B2 · utility
6Cited by
3References
39Claims
0Family size
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Key dates
| Filing date | Oct 29, 2002 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Oct 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/147
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In some embodiments of the present invention, quantized frequency coefficients of a matrix of spatial data are obtained. Blocks of frequency coefficients that will be zero-valued after quantization are identified. Only frequency coefficients belonging to other blocks are calculated explicitly using the spatial-to-frequency transform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.