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- W1976967054 abstract "This work focuses on estimating the information conveyed to a user by multi-dimensional digitised signals. The goal is establishing the extent to which an increase in radiometric resolution, or equivalently in signal-to-noise-ratio (SNR), can increase the amount of information available to users. Lossless data compression and noise modeling are exploited to measure the useful information content of the data. In fact, the bit-rate achieved by the reversible compression process takes into account both the contribution of the observation noise, i.e. information regarded as statistical uncertainty, whose relevance is null to a user, and the intrinsic information of hypothetically noise-free samples. Once the parametric model of the noise, assumed to be possibly non-Gaussian, has been preliminarily estimated, the mutual information between noise-free signal and recorded noisy signal is easily estimated. However, it is also desirable to know what is the amount of information that the digitised samples would convey if they were ideally recorded without observation noise. Therefore, an entropy model of the source is defined and such a model is inverted to yield an estimate of the information content of the noise-free source from the code rate and the noise model. Results are reported and discussed on true superspectral data (14 spectral bands) recorded by the ASTER imaging radiometer." @default.
- W1976967054 created "2016-06-24" @default.
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- W1976967054 date "2005-10-06" @default.
- W1976967054 modified "2023-09-23" @default.
- W1976967054 title "Information-theoretic assessment of ASTER super-spectral imagery" @default.
- W1976967054 doi "https://doi.org/10.1117/12.628102" @default.
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