DocumentCode :
1379130
Title :
Statistical encoding for text and picture communication
Author :
Michel, W. S.
Author_Institution :
Bell Telephone Laboratories, Inc., New York, N. Y.
Volume :
77
Issue :
1
fYear :
1958
Firstpage :
33
Lastpage :
36
Abstract :
Suggestions have been made from time to time for reducing the transmission time or bandwidth required for the facsimile transmission of text or pictorial material by representing it by a description which has low redundancy. This paper presents an investigation of the channel capacity required for various types of copy, using one such description, based on one-dimensional differential coordinates together with statistically matched encoding. A binary digital transmission channel is assumed throughout. Only black and white copy is considered. A written or printed message is assumed to consist of a 2-dimensional array of resolution elements, called dots, whose number determines the definition. Since a definition of 0.01 inch is widely accepted as satisfactory for facsimile reproduction of black and white copy, this figure, corresponding to almost a million dots for an 8 1/2- by 11-inch typewritersize sheet, is used throughout.
Keywords :
Channel capacity; Channel coding; Complexity theory; Facsimile; Materials; TV;
fLanguage :
English
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
Publisher :
ieee
ISSN :
0097-2452
Type :
jour
DOI :
10.1109/TCE.1958.6372754
Filename :
6372754
Link To Document :
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