Title :
Experiments with wavelets for compression of SAR data
Author :
Werness, Susan A. ; Wei, Susan C. ; Carpinella, Ronald
Author_Institution :
Environ. Res. Inst. of Michigan, Ann Arbor, MI, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
Wavelet transform coding is shown to be an effective method for compression of both detected and complex synthetic aperture radar (SAR) imagery. Three different orthogonal wavelet transform filters are examined for use in SAR data compression; the performances of the filters are correlated with mathematical properties such as regularity and number of vanishing moments. Excellent quality reconstructions are obtained at data rates as low as 0.25 bpp for detected data and as low as 0.5 bits per element (or 2 bpp) for complex data
Keywords :
data compression; geophysical techniques; remote sensing; remote sensing by radar; synthetic aperture radar; wavelet transforms; SAR; data compression; geophysics; imagery; imaging; land surface remote sensing; measurement technique; method; microwave; number of vanishing moments; orthogonal wavelet transform filter; regularity; signal processing; synthetic aperture radar; wavelet transform coding; Bit rate; Data compression; Discrete wavelet transforms; Filters; Image coding; Image resolution; Radar detection; Synthetic aperture radar; Wavelet analysis; Wavelet transforms;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
