Methods for performing DAF data filtering and padding

Details Methods for performing DAF data filtering and padding Methods for performing DAF data filtering and padding

2007-09-18

2007-09-18

Rogers, Scott A. (Department: 2627)

Image analysis

Image enhancement or restoration

Image filter

C382S264000, C382S275000

Reexamination Certificate

active

10454373

ABSTRACT:
A method for padding, filtering, denoising, image enhancing and increased time-frequency acquisition is described for digitized data of a data set is described 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.

REFERENCES:
patent: 5025404 (1991-06-01), Janssen et al.
patent: 5644646 (1997-07-01), Du et al.
patent: 336685 (1989-10-01), None
Shi, Z. et al, “Recent Improvements on Perceptual Processing using DAF Wavelets”, IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP Proceedings, vol. 1, 2000, pp. 496-499.

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