DocumentCode
1575632
Title
Visually lossless compression of synthetic aperture radar images
Author
Ponomarenko, N.N. ; Lukin, V.V. ; Egiazarian, K.O.
Author_Institution
Dept. of Transmitters, Receivers & Signal Process., Nat. Aerosp. Univ., Kharkov, Ukraine
fYear
2011
Firstpage
263
Lastpage
265
Abstract
A task of visually lossless but, in fact, lossy compression of synthetic aperture radar (SAR) images corrupted by intensive speckle is considered. A method based on discrete cosine transform (DCT) applied in 8×8 blocks is proposed. The method is adapted to spatial DCT spectrum of speckle and its multiplicative nature. It is shown that the proposed method allows providing compression ratio (CR) of about 3.2...3.5 for simulated and real life SAR images which is sufficiently larger than for image lossless compression techniques.
Keywords
data compression; discrete cosine transforms; radar imaging; speckle; synthetic aperture radar; DCT method; SAR images; compression ratio; discrete cosine transform; image lossless compression techniques; spatial DCT spectrum; speckle; synthetic aperture radar images; visually lossless compression; Discrete cosine transforms; Filtering; Image coding; Noise; Quantization; Speckle; Synthetic aperture radar;
fLanguage
English
Publisher
ieee
Conference_Titel
Antenna Theory and Techniques (ICATT), 2011 VIII International Conference on
Conference_Location
Kyiv
Print_ISBN
978-1-4577-2211-0
Type
conf
DOI
10.1109/ICATT.2011.6170755
Filename
6170755
Link To Document