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Perceptual assessment of simulated print noise with random and periodic structure
Stockholm University, Faculty of Social Sciences, Department of Psychology.
2005 (English)In: Journal of Visual Communication and Image Representation, ISSN 1047-3203, Vol. 16, no 3, 271-287 p.Article in journal (Refereed) Published
Abstract [en]

Lightness variation in a supposedly uniform printed surface is referred to as "print mottle." This phenomenon is one of the most detrimental to overall print quality. A fundamental problem in the evaluation of human sensitivity to a print quality variable such as mottle is the difficulty in controlling external variables, such as variations in color or in average print density, that arise in the printing process. These variables can influence the rating of quality. To analyze the impact of a systematic mottle pattern compared to that of the common case of a random pattern, a digital simulation technique was used to create gray test samples with various amounts of stochastic and systematic noise of different characters. The samples were printed using a high quality inkjet printer and evaluated by a panel of judges. Two different evaluation methods were used. Observers rated dissimilarity and preference in a pairwise comparison task, and also by positioning samples in the horizontal and vertical directions of a digitizing tablet. The results show that individuals rate the samples in a very consistent way and that systematic noise is perceived to be more annoying than random noise of a similar physical magnitude. Furthermore, the consistency between the two different evaluation methods is very good, which suggests that two-dimensional scaling on a digitizing tablet is a viable method for grouping samples in a plane. The results also show that digital simulation of print artifacts is a powerful tool for creating samples with controlled disturbances.

Place, publisher, year, edition, pages
2005. Vol. 16, no 3, 271-287 p.
Keyword [en]
Multidimensional scaling, Ordered noise, Print mottle, Simulation, Systematic disturbances, Two-dimensional scaling
URN: urn:nbn:se:su:diva-23108DOI: 10.1016/j.jvcir.2004.11.002OAI: diva2:190182
Part of urn:nbn:se:su:diva-151Available from: 2004-05-06 Created: 2004-05-06 Last updated: 2009-10-27Bibliographically approved
In thesis
1. Perceptual determinants of print quality
Open this publication in new window or tab >>Perceptual determinants of print quality
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: Psykologiska institutionen, 2004. 65 p.
perceived print quality, perception of gloss and gloss unevenness, JND, perception of visual noise, print mottle, perception of systematic visual noise, psykologi
urn:nbn:se:su:diva-151 (URN)91-7265-905-X (ISBN)
Public defence
2004-05-28, David Magnussonsalen (U31), hus 8, Frescati hagväg 8, Stockholm, 13:00
Available from: 2004-05-06 Created: 2004-05-06Bibliographically approved

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