Abstract :
This paper surveys recent progress in digital facsimile coding techniques in Japan. First, the digital facsimile coding techniques are classified into two major categories: information-preserving coding and non-information-preserving coding. Second, various two-dimensional coding algorithms which fall into the category of information-preserving coding are selected and discussed. Two-dimensional coding is divided into two categories: simultaneous coding of n lines and line-by-line sequential coding. Third, the READ coding scheme, which was proposed by Japan to CCITT SG XIV as the standard of two-dimensional coding, is explained in detail. Fourth, recent developments concerning non-information-preserving coding are explained. Finally, related coding techniques and applications of digital facsimile coding are briefly described.
