Some practical universal noiseless coding techniques, part 2

Details Some practical universal noiseless coding techniques, part 2 Some practical universal noiseless coding techniques, part 2

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8328069r&link_type=abstract

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Mathematics

Probability

Algorithms, Coding, Data Compression, Image Processing, Information Theory, Space Exploration, Spacecraft Instruments, Central Processing Units, Computer Programs, Error Analysis, Probability Distribution Functions, Statistical Analysis

Scientific paper

This report is an extension of earlier work (Part 1) which provided practical adaptive techniques for the efficient noiseless coding of a broad class of data sources characterized by only partially known and varying statistics (JPL Publication 79-22). The results here, while still claiming such general applicability, focus primarily on the noiseless coding of image data. A fairly complete and self-contained treatment is provided. Particular emphasis is given to the requirements of the forthcoming Voyager II encounters of Uranus and Neptune. Performance evaluations are supported both graphically and pictorially. Expanded definitions of the algorithms in Part 1 yield a computationally improved set of options for applications requiring efficient performance at entropies above 4 bits/sample. These expanded definitions include as an important subset, a somewhat less efficient but extremely simple "FAST' compressor which will be used at the Voyager Uranus encounter. Additionally, options are provided which enhance performance when atypical data spikes may be present.

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