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Lempel-Zif-Welch (LZW)

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Lempel-Zif-Welch (LZW) - definition(s)

LZW - Lempel-Zif-Welch: a popular data compression technique developed in 1977 by J. Ziv and A Lempel. Unisys researcher Terry Welch later created an enhanced version of these methods, and Unisys holds a patent on the algorithm. It is widely used in many hardware and software products, including V.42bis modems, GIF and TIFF files and PostScript Level 2.

[Category=Geospatial ]

Source: Open Geospatial Consortium, 23 June 2011 07:38:28, http://www.opengeospatial.org/ogc/glossary External 


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