Accession Number : ADA327904

Title :   Noise Suppression in Large Wavenumber Fourier Imaging.

Descriptive Note : Rept. for 1 Mar-1 May 97,

Corporate Author : COLORADO SCHOOL OF MINES GOLDEN CENTER FOR WAVE PHENOMENA

Personal Author(s) : Wang, Lan ; Bleistein, Norm

PDF Url : ADA327904

Report Date : 01 MAY 1997

Pagination or Media Count : 8

Abstract : For the band-limited inverse problem, the inversion formulas developed by Bleistein et al., generate a reflector map as well as an estimate of reflection coefficients from the discontinuities of the medium parameters. Here, we describe the use of a multiscale smoothing operator to suppress the noise while preserving the features of the original processing formula. This is accomplished by applying a simple multiplier in wavenumber domain to the output of the inversion formalism. A comparison of this approach to wavelet based edge detection processing shows that this continuous multiscale operator allows more flexibility for changing the length of the smoothing operator.

Descriptors :   *SEISMIC WAVES, *NOISE REDUCTION, *WAVELET TRANSFORMS, ALGORITHMS, SIGNAL PROCESSING, FOURIER TRANSFORMATION, IMAGE PROCESSING, SEISMIC DATA, INVERSE SCATTERING, SMOOTHING(MATHEMATICS).

Subject Categories : Seismology
      Operations Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE