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Proceedings Paper

Color image transmission system for prepress with ADCT compression algorithm
Author(s): Hiroyuki Hasegawa; Masashi Sugiura; Hideyuki Ono; Naoki Kurakami; Takao Omachi
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Paper Abstract

This paper outlines the compression and transmission system developed for high- quality color image data for prepress. This system has resulted in highly-efficient compression of color image data by using DCT(Discrete Cosine Transform) - SQ(Scalar Quantization) coding scheme adopted as the basic algorithm of the international standard for color and still picture coding in ISO. This system allows selection of a compression ratio in the range of 1/2 - 1 /50. As a result of evaluations a quality image picture for printing is obtained at a data compression ratio ranging from 1/5 - 1/10. By using the newly-developed high-speed CODEC LSIs, this system has enabled real-time data transmission to 64Kbps digital lines.

Paper Details

Date Published: 1 September 1990
PDF: 12 pages
Proc. SPIE 1360, Visual Communications and Image Processing '90: Fifth in a Series, (1 September 1990); doi: 10.1117/12.24167
Show Author Affiliations
Hiroyuki Hasegawa, NEC Corp. (Japan)
Masashi Sugiura, NEC Corp. (Japan)
Hideyuki Ono, NEC Corp. (Japan)
Naoki Kurakami, NEC Corp. (Japan)
Takao Omachi, NEC Corp. (Japan)

Published in SPIE Proceedings Vol. 1360:
Visual Communications and Image Processing '90: Fifth in a Series
Murat Kunt, Editor(s)

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