Accession Number : ADA137592

Title :   Mixed Mode for Group 4 Facsimile Systems.

Descriptive Note : Final rept.,


Personal Author(s) : Deutermann,A

PDF Url : ADA137592

Report Date : 07 Nov 1983

Pagination or Media Count : 126

Abstract : The purpose of this effort is to investigate the more advanced Mixed Mode coding technique which will be one service of Group 4 facsimile. In a mixed mode system the information printed on a page is divided into two parts - symbols (letters, numerals, punctuation, etc.) and graphics (logos, signatures, sketches, etc.). This study examines possible techniques for segmenting a document into graphic and symbol areas, and assemble a code that represents the entire document. Four segmentation techniques were selected for analysis as follows: SYMBOL REMOVAL/SCAN LINE; SYMBOL REMOVAL/LINE OF SYMBOLS; EXTENDED TELETEX; SYMBOL REMOVAL/HYBRID. These techniques were designed to differ from each other as much as possible, so as to display a wide variety of characteristics. For each technique, many minor modifications would be possible, but it is not expected that these modifications would alter the conclusions drawn from the study. (Author)

Descriptors :   *Data compression, *Facsimile recording systems, *Printing, Multimode, Documents, Segmented, Graphics, Symbols, Algorithms

Subject Categories : Printing and Graphic Arts

Distribution Statement : APPROVED FOR PUBLIC RELEASE