Hyperspectral imaging (HSI) technology has been used for various remote sensing applications due to its excellent capability of monitoring regions-of-interest over a period of time. However, the large data volume of four-dimensional multitemporal hyperspectral imagery demands massive data compression techniques. While conventional 3D hyperspectral data compression methods exploit only spatial and spectral correlations, we propose a simple yet effective predictive lossless compression algorithm that can achieve significant gains on compression efficiency, by also taking into account temporal correlations inherent in the multitemporal data. We present an information theoretic analysis to estimate potential compression performance gain with varying configurations of context vectors. Extensive simulation results demonstrate the effectiveness of the proposed algorithm. We also provide in-depth discussions on how to construct the context vectors in the prediction model for both multitemporal HSI and conventional 3D HSI data.
Efficient Lossless Compression of Multitemporal Hyperspectral Image Data
Hongda Shen,Zhuocheng Jiang,W. Pan
Published 2018 in Journal of Imaging
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- Publication year
2018
- Venue
Journal of Imaging
- Publication date
2018-12-02
- Fields of study
Computer Science, Engineering, Environmental Science
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