Enhanced isotropic 2D and 3D gradient method
US7653258B2 · kind B2 · utility
1Cited by
11References
14Claims
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Key dates
| Filing date | Apr 17, 2007 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method use 2D and 3D numerical gradient operators for reducing anisotropic inaccuracies in digital image processing. Enhanced isotropic operators are derived by first parameterizing corresponding numerical operators, followed by determining the parameters for the operators by matching analytical gradients with numerical gradients, which produces generic frequency-independent operators. The system and method also optimize the design of operators for use at any given frequency range needed for any special purpose application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.