Methods for performing DAF data filtering and padding
US6847737B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for padding, filtering, denoising, image enhancing and increased time-frequency acquisition is described for digitized data of a data set where unknown data is estimated using real data by adding unknown data points in a manner that the padding routine can estimate the interior data set including known and unknown data to a given accuracy on the known data points. The method also provides filtering using non-interpolating, well-tempered distributed approximating functional (NIDAF)-low-band-pass filters. The method also provides for symmetric and/or anti-symmetric extension of the data set so that the data set may be better refined and can be filtered by Fourier and other type of low frequency or harmonic filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.