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- W2035662503 abstract "This paper investigates on the development of an advanced method for lossless compression of hyperspectral data to be implemented on board of a space platform. An adaptive Differential Pulse Code Modulation (DPCM) method, jointly exploiting spectral and spatial correlation and utilizing space-oriented context-based entropy coding, is taken as starting point. The algorithm considered utilizes a classified DPCM approach, in which predictors, taking into account the statistical properties of the data being compressed, are preliminarily calculated and then adaptively selected or combined. Two fuzzy clustering algorithms are tested with the aim of finding the best algorithm to be employed in the initialization phase, which is the core of the classified DPCM compression procedure, may be performed off line so as to unaffect the computational complexity of the online procedure running on board. The final method utilizes a standard CCSDS-Rice space encoder and represents a good tradeoff between compression capability and computational complexity. Overall coding performances, as well as differences between the two fuzzy clustering algorithms, are reported and discussed through extensive experiments carried out on four hyperspectral AVIRIS images." @default.
- W2035662503 created "2016-06-24" @default.
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- W2035662503 date "2004-02-05" @default.
- W2035662503 modified "2023-09-23" @default.
- W2035662503 title "Fuzzy predictor calculation for on-board lossless compression of hyperspectral imagery by adaptive DPCM" @default.
- W2035662503 doi "https://doi.org/10.1117/12.514033" @default.
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