A High Compression Coding Method For Facsimile Documents

Pascale Joly; Francoise Romeo

doi:10.1117/12.952233

1 May 1986 A High Compression Coding Method For Facsimile Documents

Pascale Joly, Francoise Romeo

Proceedings Volume 0594, Image Coding; (1986) https://doi.org/10.1117/12.952233
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

A facsimile data compression method is presented. Using three different modes : line recognition, pattern matching and facsimile coding, it is particularly adapted to black and white technical documents containing both graphical and textual information. The use of such a method is quite interesting in electronic document storage and retrieval systems, where considerable amount of documents are to be digitized and stored. Compared to CCITT group IV two-dimensional code, the average compression ratio is about 3.9 times higher. The possible building of a common pattern library for a set of documents, instead of a library per document, allows to improve the compression for text-predominate documents. The implementation of the method on a microcomputer equipped with a high-resolution raster display showed that in spite of some slight information modifications, the quality of restitution is good, and the document decoding and display are very fast.

Citation Download Citation

Pascale Joly and Francoise Romeo "A High Compression Coding Method For Facsimile Documents", Proc. SPIE 0594, Image Coding, (1 May 1986); https://doi.org/10.1117/12.952233

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