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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 on Calibration and Validation (CEOS SAR CalVal), 1999-10-26 - 1999-10-29, Toulouse, France.

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Abstract

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 (Speech)
Additional Information:LIDO-Berichtsjahr=1999,
Title:Wavelet based ScanSAR Image Compression Minimizing Block Effects
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID
Fischer, J.V.UNSPECIFIEDUNSPECIFIED
Benz, U.C.UNSPECIFIEDUNSPECIFIED
Date:1999
Journal or Publication Title:Internet http://www.estec.esa.nl/CONFANNOUN/99b02/
Refereed publication:Yes
In Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:ScanSAR, wavelet, compression, block effects, SDNR map
Event Title:CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal)
Event Location:Toulouse, France
Event Type:international Conference
Event Dates:1999-10-26 - 1999-10-29
Organizer:ESA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Flugzeug-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > SAR Technology
Deposited By: Fischer, Jens
Deposited On:16 Sep 2005
Last Modified:25 Jul 2016 08:37

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