Efficient Coherent Noise Filtering - an Application of Shift-Invariant Wavelet Denoising

C-10 EFFICIENT COHERENT NOISE FILTERING: AN APPLICATION OF SHIFT-INVARIANT WAVELET DENOISING L. C. DUVAL 1 and P.-Y. GALIBERT 2 Abstract 1 IFP 95852 Rueil-Malmaison Cedex France [email protected] 2 CGG 91341 Massy France [email protected] Coherent noise or surface waves filtering represents one of the most complex issues in land seismic data processing. Wavelet based filtering has recently begun to challenge the popular and robust frequencywavenumber (�-� Ü-� Ý) filter. Wavelet filters provide fine time-scale representations and non linear filtering capabilities that yield in some instances better results on dispersive coherence noise. We propose in this work an improvement over the classical