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The Impact of Halftone Screen on Color Graininess

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Abstract:

Color graininess is one of the most important artifacts affecting image quality. Previous studies have indicated that it is necessary to remove the screen signal on the scanned amplitude-modulated, AM, screen before adopting any granularity metric to achieve satisfactory correlation between the objective measurement and subjective evaluation, indicating the AMhalftone screen has no effect on the perceived graininess. Nonetheless, the inherent characteristics of FMhalftone screens with pseudorandom dot placement transforms the frequency content of the screen signal from spikes to a distribution across the spatial frequency domain. The objective of this experiment is to conduct a visual experiment comparing the perceived graininess on patches with various color generated by various types of AM and FM screens. Correlated with an unified objective granularity metric, we can evaluate the impact of various halftone screens on color graininess, and verify the assertion that the periodic screen signal is independent from the perceived graininess.

Document Type: Research Article

Publication date: 2006-01-01

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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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