Title :
Quality evaluation of compressed optical and SAR images: JPEG vs. wavelets
Author :
Datcu, M. ; Schwarz, G. ; Schmidt, K. ; Reck, C.
Author_Institution :
DRD German Remote Sensing Data Center, German Aerosp. Res. Establ., Wessling, Germany
Abstract :
Presents a comparison of compression algorithms using the discrete cosine transform-DCT (JPEG) and discrete wavelet transform-DWT applied to remotely sensed images. The statistical behaviors of the DCT and DWT are addressed and the implications for the performance of the image compression algorithms are compared for optical and SAR images. These SAR images were despeckled during compression. Qualitative and quantitative results are presented
Keywords :
data compression; discrete cosine transforms; geophysical signal processing; geophysical techniques; image coding; optical information processing; radar imaging; remote sensing; remote sensing by radar; synthetic aperture radar; transforms; wavelet transforms; DCT; DWT; JPEG; SAR image; compression algorithm; data compression; despeckled; discrete cosine transform; discrete wavelet transform; geophysical measurement technique; image compression; optical imaging; quality evaluation; radar imaging; radar remote sensing; wavelets; Data compression; Discrete cosine transforms; Discrete wavelet transforms; Eigenvalues and eigenfunctions; Image coding; Karhunen-Loeve transforms; Optical sensors; Quantization; Transform coding; Wavelet transforms;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International
Conference_Location :
Firenze
Print_ISBN :
0-7803-2567-2
DOI :
10.1109/IGARSS.1995.523997
