Block Character Coding

William K. Pratt; Wen-hsiung Chen; Clifford Reader

doi:10.1117/12.954999

13 December 1976 Block Character Coding

William K. Pratt, Wen-hsiung Chen, Clifford Reader

Proceedings Volume 0087, Advances in Image Transmission Techniques; (1976) https://doi.org/10.1117/12.954999
Event: 20th Annual Technical Symposium, 1976, San Diego, United States

Abstract

A binary facsimile coding technique capable of coding documents at compression ratios from 10:1 to 40:1 has been developed. In the basic system, individual document characters are isolated into small rectangular blocks. The location, size, and contents of each block are coded for transmission. A more sophisticated version of the coder utilizes matching of a character with previously scanned characters. If a match exists, a code word indicating the match is coded along with the character location.

Citation Download Citation

William K. Pratt, Wen-hsiung Chen, and Clifford Reader "Block Character Coding", Proc. SPIE 0087, Advances in Image Transmission Techniques, (13 December 1976); https://doi.org/10.1117/12.954999

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