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Goniochromatic Difference Between Effect Coatings: Is the Whole More than the Sum of its Parts?

Blahová, Jana and Kirchner, Eric and Dekker, Niels and Lucassen, Marcel and Njo, Lan and van der Lans, Ivo and Urban, Philipp and Huertas, Rafael (2015):
Goniochromatic Difference Between Effect Coatings: Is the Whole More than the Sum of its Parts?
In: Proceedings of SPIE; 9398, SPIE Press, Bellingham, In: Measuring, Modeling, and Reproducing Material Appearance 2015, DOI: 10.1117/12.2083112,
[Conference or Workshop Item]

Abstract

Special effect coatings have been increasingly used in many industries (e.g. automotive, plastics industry) over the past two decades. The measurement of perceived color differences on such coatings cannot be done by means of traditional color-difference formulas (e.g. CMC(l:c), CIEDE2000, AUDI2000) as they lack to consider distinct optical properties such as coarseness, glint and goniochromatism. However, there is a need to ensure quality and colorimetric accuracy when designing and processing special effect coatings. In this paper, we present a psychophysical experiment intended to serve as a basis for future work on a new generation of color-difference formula(s) for multiple viewing geometries (viewing and illumination angle). We are especially interested in assessing whether judging under a single geometry can lead to different results as judging under several (two) geometries, i.e. whether the sum is more than its part.

Item Type: Conference or Workshop Item
Erschienen: 2015
Creators: Blahová, Jana and Kirchner, Eric and Dekker, Niels and Lucassen, Marcel and Njo, Lan and van der Lans, Ivo and Urban, Philipp and Huertas, Rafael
Title: Goniochromatic Difference Between Effect Coatings: Is the Whole More than the Sum of its Parts?
Language: English
Abstract:

Special effect coatings have been increasingly used in many industries (e.g. automotive, plastics industry) over the past two decades. The measurement of perceived color differences on such coatings cannot be done by means of traditional color-difference formulas (e.g. CMC(l:c), CIEDE2000, AUDI2000) as they lack to consider distinct optical properties such as coarseness, glint and goniochromatism. However, there is a need to ensure quality and colorimetric accuracy when designing and processing special effect coatings. In this paper, we present a psychophysical experiment intended to serve as a basis for future work on a new generation of color-difference formula(s) for multiple viewing geometries (viewing and illumination angle). We are especially interested in assessing whether judging under a single geometry can lead to different results as judging under several (two) geometries, i.e. whether the sum is more than its part.

Series Name: Proceedings of SPIE; 9398
Publisher: SPIE Press, Bellingham
Uncontrolled Keywords: Business Field: Virtual engineering, Research Area: Modeling (MOD), Forschungsgruppe Semantic Models, Immersive Systems (SMIS), Color difference evaluations, Colorimetry, Optical perception, Psychophysics
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Interactive Graphics Systems
Event Title: Measuring, Modeling, and Reproducing Material Appearance 2015
Date Deposited: 08 May 2019 08:01
DOI: 10.1117/12.2083112
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