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Proceedings Paper

Application of blue noise mask in color halftoning
Author(s): Meng Yao; Kevin J. Parker
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Paper Abstract

Color halftoning using a conventional screen requires rotating the screen by different angles for different color planes to avoid Moire patterns. An obvious advantage of halftoning using a blue noise mask (BNM) is that there are no screen angles or Moire patterns. However, a simple strategy of employing the same BNM on all color planes is unacceptable in cases where a small registration error can cause objectionable color shifts. In a previous paper, we proposed shifting or inverting the BNM for different color planes. The shifting technique can, at certain shift values, introduce low frequency contents into the halftone image, whereas the inverting technique can be used only on two color planes. In this paper, we propose a technique that uses four distinct BNMs that are correlated in a way such that the low frequency noise resulting from the interaction between the BNMs is significantly reduced.

Paper Details

Date Published: 27 February 1996
PDF: 5 pages
Proc. SPIE 2727, Visual Communications and Image Processing '96, (27 February 1996); doi: 10.1117/12.233303
Show Author Affiliations
Meng Yao, Univ. of Rochester (United States)
Kevin J. Parker, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 2727:
Visual Communications and Image Processing '96
Rashid Ansari; Mark J. T. Smith, Editor(s)

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