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Proceedings Paper

Variable-blocksize transform coding of four-color printed images
Author(s): Andre Kaup; Til Aach
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Paper Abstract

In this paper we outline a new approach to transform coding of four-color printed images employing variable blocksizes in connection with cpiadtree data structures. A new statistical model based decision criterion for guidance of the quadtree decomposition is proposed. This decision criterion avoids drawbacks of simple deviation tests or detail measures and can easily be extended towards multi-color segmentation. To account for the greatly varying local image content found in printed images, a highly adaptive threshold coding concept using an activity/entropy block classification scheme is introduced. Segmentation results as well as average compression ratios for the proposed system will be given.

Paper Details

Date Published: 1 November 1991
PDF: 8 pages
Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); doi: 10.1117/12.50250
Show Author Affiliations
Andre Kaup, Aachen Univ. of Technology (Germany)
Til Aach, Aachen Univ. of Technology (Germany)

Published in SPIE Proceedings Vol. 1605:
Visual Communications and Image Processing '91: Visual Communication
Kou-Hu Tzou; Toshio Koga, Editor(s)

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