Develop image-based gloss measurement instruments

A new paper reports on the development of measuring instruments that use image-based detectors for gloss measurements.
as described in ASTM D523-14, image-based gloss gauges are constructed according to the specifications of the optical layout of a mirror gloss gauge that measures geometric shapes at 60 degrees. Thus, the CMOS detector is used instead of the photodydist detector

. The optical layout of the system is designed and validated by using ray tracing software. A series of 16 matte to high gloss test samples with a labeled gloss value of between 3 and 90 gloss units are used to compare scopic gloss measurements obtained using developed instruments and commercial mirror gloss gauges.
can be more comprehensively assigned to all glossy prints
the average and maximum deviations obtained are only 1.2 and 2.7 glossy units, respectively, confirming the suitability of the system to perform standard mirror gloss measurements. The potential benefits of an image-based approach are then studied. For example, the optical charactertation of orange peel and contrasting gloss by using the system is discussed, confirming that the proposed instrument provides an important opportunity for a more comprehensive charactertation of the total gloss impression.
the study was published last month: Journal of Coatings Technology and Research July 2019, Volume 16, Issue 4, pp 913-921.