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Advances in digital image processing for document reproduction

  • P. Stucki
Chapter 5 Application Oriented VLSI
Part of the Lecture Notes in Computer Science book series (LNCS, volume 163)

Abstract

The properties of conventional, ordered dot-pattern generation techniques for bi-level halftone representation are examined and compared with the properties of error-diffusion-based, disordered dot-pattern-generation algorithms. The various processing steps necessary for adaptation of the disordered halftone pattern-generation technique to digital image hardcopy reproduction with non-ideal computer-output printing devices are described. It includes procedures for spatial distribution of thresholding errors, suppression of dot-density artifacts and compensation for dot overlap. These procedures represent the core of a Multiple-Error Correction Computation Algorithm called MECCA, the objective of which is to linearize the non-ideal printing process in order to minimize the loss or shift of tonal gradations. Finally, the performance of MECCA is compared with a conventional digital screening technique, and the various reproduction-quality versus computational-complexity trade-offs are discussed.

Keywords

Spatial Frequency Error Diffusion Error Filter Screening Resolution Printing Device 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • P. Stucki
    • 1
  1. 1.IBM Zurich Research LaboratoryRueschlikonSwitzerland

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