Abstract
Digital halftoning is an essential part of the process for printing color, continuous-tone content. Traditionally, the highest quality has been achieved with analog, offset lithographic presses, using color screen sets that yield periodic, clustered-dot halftone patterns. Increasingly, these systems are being supplanted by digital presses that are based on either electrophotographic or inkjet marking processes. Due to the inherent instability of the electrophotographic marking process, periodic, clustered-dot halftone patterns are also widely used with such presses. However, digital presses have much lower resolution than their analog counterparts. Simply mimicking the traditional screen designs used with commercial, offset presses will result in halftone patterns that are more susceptible to moire due to the interaction between the periodic patterns used to render the different color channels. This causes instability in the printed colors. The moire can be reduced by increasing the frequency of the halftone patterns. But this may make the print appear grainier than its analog counterpart. In this paper, we introduce a principled design procedure that allows one to design color screen sets that generate periodic, clustered-dot halftone patterns that improve color stability without increasing graininess. We present experimental results to support the benefits of our new color screen set design framework.
Original language | English |
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Article number | 8917827 |
Pages (from-to) | 3023-3038 |
Number of pages | 16 |
Journal | IEEE Transactions on Image Processing |
Volume | 29 |
DOIs | |
State | Published - 1 Jan 2020 |
Keywords
- Halftoning
- color plane mis-registration
- color uniformity
- graininess
- irregular screens
- moiré
- print quality
- regular screens
- screen
ASJC Scopus subject areas
- Software
- Computer Graphics and Computer-Aided Design