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Optimizing Halftone Masks with Genetic Algorithms and Printer Models

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Techniques are described for determining optimum halftone masks for electrophotographic laser printers. Earlier techniques were based primarily on up-shifting the noise power of the halftone pattern in order to minimize visual granularity. This strategy worked well with low addressable printers up to the mid 1990s. However, current addressability of EP printers is so high that too much up-shifting introduces printer instabilities that can introduce different kinds of granularity and/or mottle. Thus, the optimum halftone mask for image quality should have noise power concentrated within at frequency band between the edge of human vision and the edge of printer stability. The authors have developed search techniques for examining permutations of halftone masks of size HxW. The techniques are based on a strategy called a genetic algorithm (GA).
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Document Type: Research Article

Publication date: January 1, 2003

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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