Optimized lossless data compression methods

Optimized lossless data compression methods

A method for losslessly encoding and compressing and decoding original, raw, raster data, and other files by optimizing the results of preprocessing and transformation techniques. Four stages are involved: pre-processing during which the data is replaced by predictive values and the deviations from...

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Hauptverfasser: Talapov, Andrei, Kilbank, Daniel, Quagliano, John, Gideon, Thomas Lyon, Malaska, Ted, Claus, Janek, Nash, Hadon
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Sprache:eng
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creator Talapov, Andrei
Kilbank, Daniel
Quagliano, John
Gideon, Thomas Lyon
Malaska, Ted
Claus, Janek
Nash, Hadon
description A method for losslessly encoding and compressing and decoding original, raw, raster data, and other files by optimizing the results of preprocessing and transformation techniques. Four stages are involved: pre-processing during which the data is replaced by predictive values and the deviations from the predictive value; mapping each block through a transform sequence using a lossy reversible mapping; minimizing the joint entropy of the transformed data and deviation data by varying parameters for the predictive and transform step; and encoding the transformed sequence. At each stage of the compression of the data, different techniques are tried and compared and an optimal technique used to carry out that state.
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title Optimized lossless data compression methods
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