Context Modeler for Wavelet Compression of Spectral Hyperspectral Images
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A context-modeling subalgorithm has
been developed as part of an algorithm
that effects three-dimensional (3D)
wavelet-based compression of hyperspectral
image data. The context-modeling
subalgorithm, hereafter denoted the
context modeler, provides estimates of
probability distributions of wavelet-transformed
data being encoded. These estimates
are utilized by an entropy coding
subalgorithm that is another major component
of the compression algorithm.
The estimates make it possible to compress
the image data more effectively
than would otherwise be possible.
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