Conference proceedings

Brightness and sparkle appearance of goniochromatic samples

Iacomussi P, Radis M, Rossi G ...see all

Proceeding of Image Science and Technology Measuring, Modeling, and Reproducing Material Appearance (2016) pp. 1-6 Published by Society for Imaging Science and Technology

  • 1

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.
Sign in to save reference

Abstract

In 2013 the European Metrology Research Program (EMRP) funded the research project, “Multidimensional Reflectometry for industry, xD-Reflect”, to investigate the macroscopic optical properties related to visual appearance of modern surfaces and to develop and improve methodologies, tools and measurement devices able to provide a better description of material characteristics. One of the planned task developed several subjective tests on visual descriptors of gloss, sparkle, graininess, colour and their combined influences with reference to the measured values of reference samples. INRIM performed investigation on subjective descriptors of brightness and sparkle and their relationship with geometrical conditions of view, illuminating source characteristics, measured Radiometric Bidirectional Reflectance Distribution Function (BRDF), colorimetric attributes (CIE L*a*b*) and sparkles. This paper deals with the definition of subjective Brightness and Sparkle scales considering achromatic samples of goniochromatic materials, under LED and not LED lighting source. Key points of this study are the use of a soft metrology approach, with strong metrological characterization of the test behaviour (i.e. radiance and illuminance distribution, BRDF and sparkles of the samples), and the use of a large subject group (about 100 subject attended the test).

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

There are no full text links

Authors

  • P Iacomussi

  • M Radis

  • G Rossi

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free