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Proceedings Paper

Measuring gloss by digital photography
Author(s): Pancham Kumar; Lindsay MacDonald
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Paper Abstract

The measurement of gloss is conventionally made by specialised instruments that determine the ratio of reflected to incident illumination at a single fixed angle. This study investigated whether digital photography with flash illumination could be used as an alternative. Multiple exposures were combined by a high dynamic range (HDR) imaging technique to produce a two-dimensional intensity profile of the reflectance around the specular point. The method was tested for six paper samples of varying gloss, and the results were found to correlate well with instrumental measurements. The image gloss profiles, however, provided more information about the distribution of the reflection over a range of angles and also gave an indication of the surface texture.

Paper Details

Date Published: 16 January 2006
PDF: 11 pages
Proc. SPIE 6058, Color Imaging XI: Processing, Hardcopy, and Applications, 60580A (16 January 2006); doi: 10.1117/12.642312
Show Author Affiliations
Pancham Kumar, London College of Communication (United Kingdom)
Lindsay MacDonald, London College of Communication (United Kingdom)

Published in SPIE Proceedings Vol. 6058:
Color Imaging XI: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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