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Wavelet based ScanSAR Image Compression Minimizing Block Effects

Fischer, J.V. and Benz, U.C. (1999) Wavelet based ScanSAR Image Compression Minimizing Block Effects. In: Internet http://www.estec.esa.nl/CONFANNOUN/99b02/. CEOS SAR Workshop, Toulouse, 26.10.-29.10.1999.

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ScanSAR images are important products of modern spaceborne SAR systems. A wide swath is covered during one single data take. Usual processing of ScanSAR images with a high number of looks not only reduces speckle but also leads to data compression. However, the amount of data can be further reduced, if an appropriate ScanSAR data compression is applied. In our paper, we propose a new wavelet based compression technique, which adapts to the ac energy distribution in ScanSAR images and minimizes artifacts due to compression. Special attention is paid to reduce block effects. Our technique is tested on ScanSAR data of RADARSAT and the SIR-C space shuttle mission. Compressing the SIR-C ScanSAR scene of Chickasha/Oklahoma, USA with factor 1:8, we achieve an improvement in the overall signal-to-distorsion-noise ratio (SDNR) from 29.7 dB to 48.03 dB.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Wavelet based ScanSAR Image Compression Minimizing Block Effects
AuthorsInstitution or Email of Authors
Journal or Publication Title:Internet http://www.estec.esa.nl/CONFANNOUN/99b02/
Event Title:CEOS SAR Workshop, Toulouse, 26.10.-29.10.1999
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institut für Hochfrequenztechnik
Deposited By: Jens Fischer
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 22:56

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