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A Guide to Data Compression Methods [With CD-ROM] 2002 Edition
Contributor(s): Salomon, David (Author)

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 ISBN: 0387952608     ISBN-13: 9780387952604
Publisher: Springer
OUR PRICE: $52.24  

Binding Type: Paperback
Published: February 2002
Qty:

Annotation: A concise guide of essential data compression methods and algorithms for text, audio and imaging data. The CD-ROM with a collection of public domain/open source programs and algorithms.
Additional Information
BISAC Categories:
- Computers | System Administration - Storage & Retrieval
- Computers | Databases - General
- Computers | Security - Cryptography
Dewey: 005.746
LCCN: 2001032844
Physical Information: 0.65" H x 7.38" W x 8.8" L (1.14 lbs) 295 pages
Features: Bibliography, Glossary, Illustrated, Index
 
Descriptions, Reviews, Etc.
Publisher Description:
In 1829, Louis Braille, a young organist in a Paris church, blind since age 3, invented the well-known code for the blind, still in common use today all over the world and named after him. Braille himself modified his code in 1834, and there have been several modifications since. However, the basic design of this code, where each character is represented by a group of 3 x 2 dots, has remained intact. The dots are embossed on thick paper and each can be raised or flat (i. e., present or absent). Each dot is therefore equivalent to one bit of information. As a result, the Braille code (Figure 1) is a 6-bit code and can therefore represent 64 symbols (the code of six flat dots indicates a blank space). Braille's followers extended the capabilities of his code in several ways. One im- portant extension is contractions. These are letters that, when they stand alone, mean words. For example, the letter "b" standing alone (or with punctuation) means the word "but," the letter "e" standing alone means "every," and "p" means "people. " Another extension is short-form words. These are combinations of two or more codes that mean an entire word (short-form words may contain contractions). For example, "ab" means "about," "rcv" means "receive," and "(the)mvs" means "themselves. " (The "the" in parentheses is a contraction, dots 2-3-4-6. ) Figure 2 shows some examples of these special codes.
 
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