Title :
Wavelet-based denoising: comparisons between orthogonal and non-orthogonal decompositions
Author :
Fargues, Monique P. ; Barsanti, Robert J. ; Hippenstiel, Ralph ; Coutu, Gerald
Author_Institution :
Dept. of Electr. & Comput. Eng., Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
In this study we present a denoising scheme applied to a non-orthogonal wavelet transform and compare the performances obtained with those based on orthogonal decompositions. We investigate the effect due to small sample sizes, specific thresholding levels, and initial thresholding scales, and compare results obtained for orthogonal and non-orthogonal transforms.
Keywords :
signal processing; wavelet transforms; nonorthogonal decompositions; nonorthogonal transforms; orthogonal decompositions; orthogonal transforms; sample sizes; signal processing; thresholding levels; thresholding scales; wavelet-based denoising; Filters; Frequency; Image coding; Noise reduction; Signal processing; Signal resolution; Wavelet coefficients; Wavelet packets; Wavelet transforms; White noise;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.662227
