Image Data Compression Techniques for Printers
نویسندگان
چکیده
Image data compression is becoming an indispensable technology to decrease memory capacity cost and to decrease transmission time, as printers begin to feature high resolution and color. This paper presents an overview of the bi-level image data compression system, Quic-Coder, that we developed. This is a non-reciprocal bi-level image data compression system aiming at improving compression performance, which is the first arithmetic coding system. Considering the relationship between high resolution and the visual characteristics of the printer, we designed the non-reciprocal characteristic such that the deterioration of images is hardly detected. Compared with the 2-level data compression system QM-Coder, which is the international standard, data volume can be decreased 20 ~ 30%. * General Manager, 1st Research Laboratory, Oki Data Corporation ** Manager, 1st Research Laboratory, Oki Data Corporation
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