Processing an input signal using a correction function based...

Details Processing an input signal using a correction function based... Processing an input signal using a correction function based...

2011-04-19

2011-04-19

Wachsman, Hal D (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

C702S106000, C702S193000, C708S400000

Reexamination Certificate

active

07930145

ABSTRACT:
A method of processing, by a computer, an input signal including obtaining input signal samples that represents a physical quantity. The method includes transforming the samples from an original domain into a plurality of coefficients in a transform domain, using an over-complete transform, such that the plurality of coefficients is sufficient to redundantly reconstruct the input signal samples. The method also includes modifying the coefficients independently of each other by applying a correction function, obtaining a set of corrected coefficients. The method also includes transforming the set of corrected coefficients back to the original domain. In the method, the correction function is determined by using a set of training pairs, each training pair including an uncorrected signal and a corrected signal, and by reducing a specified aggregate measure of error between the uncorrected signal and the corrected signal in the original domain across the training pairs.

REFERENCES:
patent: 5774375 (1998-06-01), Behrent
patent: 6337927 (2002-01-01), Elad et al.
patent: 6470469 (2002-10-01), Chou et al.

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