Graphics Interchange Format - Wikipedia, the free encyclopedia
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The Graphics Interchange Format ( GIF ) is a bitmap image format that was introduced by CompuServe in 1987 and has since come into widespread usage on the World Wide Web due to its wide support an...
en.wikipedia.org/wiki/Graphics_Interchange_Format
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An article describing LZW data compression, with working, well-annotated, C code for experimentation. ... LZW Fundamentals ... The code that the LZW algorithm outputs can be of any arbitrary length, but it must have more bits in it than a single character. The first 256 codes (when using eight bit characters) are by...
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marknelson.us/1989/10/01/lzw-data-compression/
marknelson.us/1989/10/01/lzw-data-compression/
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This page describes the term LZW and lists other pages on the Web where you can find additional information. ... The patent for LZW is owned by Unisys, which for many years allowed anyone to use the algorithm for free. Then in 1995, Unisys suddenly decided to charge a license fee.
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www.webopedia.com/TERM/L/LZW.html
www.webopedia.com/TERM/L/LZW.html
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An Interactive LZW Compression Demo ... LZW compression has its roots in the work of Jacob Ziv and Abraham Lempel. In 1977, they published a paper on "sliding-window" compression, and followed it with another paper in 1978 on "dictionary" based compression.
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www.cs.sfu.ca/CC/365/li/squeeze/LZW.html
www.cs.sfu.ca/CC/365/li/squeeze/LZW.html
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While having the right to pursue legal action or seek damages against infringing LZW developers and publishers, Unisys has so far been very accommodating and fair. It is likely that the success of LZW and its thousands of implementations, especially among small developers, caught Unisys unprepared.
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www.cloanto.com/users/mcb/19950127giflzw.html
www.cloanto.com/users/mcb/19950127giflzw.html
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How LZW compression works, its uses in prepress and the advantages and disadvantages of the technology ... LZW is named after Abraham Lempel, Jakob Ziv and Terry Welch, the scientists who developed this compression algorithm. It is a lossless ‘dictionary based’ compression algorithm. Dictionary based algorithms scan a...
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www.prepressure.com/library/compression_algorithms/lzw
www.prepressure.com/library/compression_algorithms/lzw
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A selection of articles related to LZW ... A Wisdom Archive on LZW ... LZW, LZW - Description of the algorithm, LZW - Simple example of dictionary-based compression algorithm, LZW - Uses, LZW - Patent issues, LZW - Lempel-Ziv-Welch vs. Ziv-Lempel-Welch...
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www.experiencefestival.com/lzw
www.experiencefestival.com/lzw
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LZW is more commonly encountered today in a variant known as LZC, after its use in the UNIX "compress" program. In this variant, pointers do not have a fixed length. Rather, they start with a length of 9 bits, and then slowly grow to their maximum possible length once all the pointers of a particular size have been used up.
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www.faqs.org/faqs/compression-faq/part2/section-1.html
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LZW compression is named after its developers, Lempel and Ziv, with later modifications by Welch. It is the most used image compression used for web graphics. Typically, LZW to compress image files to about one-half their original size.
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www.leadtools.com/SDK/Raster/Raster-Compression-LZW.htm
www.leadtools.com/SDK/Raster/Raster-Compression-LZW.htm
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