Performance evaluation of data compression systems applied to satellite imagery

Authors:
Lilian N. Faria;Leila M. G. Fonseca;Max H. M. Costa
Affiliations:
Image Processing Division, National Institute for Space Research, São José dos Campos, SP, Brazil;Image Processing Division, National Institute for Space Research, São José dos Campos, SP, Brazil;School of Electrical and Computer Engineering, University of Campinas, Campinas, SP, Brazil
Venue:
Journal of Electrical and Computer Engineering
Year:
2012

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Abstract

Onboard image compression systems reduce the data storage and downlink bandwidth requirements in space missions. This paper presents an overview and evaluation of some compression algorithms suitable for remote sensing applications. Prediction-based compression systems, such as DPCM and JPEG-LS, and transform-based compression systems, such as CCSDS-IDC and JPEGXR, were tested over twenty multispectral (5-band) images from CCD optical sensor of the CBERS-2B satellite. Performance evaluation of these algorithms was conducted using both quantitative rate-distortion measurements and subjective image quality analysis. The PSNR, MSSIM, and compression ratio results plotted in charts and the SSIM maps are used for comparison of quantitative performance. Broadly speaking, the lossless JPEG-LS outperforms other lossless compression schemes, and, for lossy compression, JPEG-XR can provide lower bit rate and better tradeoff between compression ratio and image quality.