Abstract
The CIECAM16 colour appearance model is currently a model with high prediction accuracy. It can solve the problem of predicting the influence of different observation conditions on the colour of gemstones. In this study, a computer vision system (CVS) was used to measure the colour of 59 bluish-green serpentinite samples, and the tristimulus values were input into the CIECAM16 forward model to calculate the colour appearance parameters of serpentinite under different surrounds, illuminances, and light sources. It was found that the darkening of the surround causes the lightness and brightness to increase. Pearson’s r of brightness and colourfulness with illuminance is 0.885 and 0.332, respectively, which predicts the Stevens and Hunt effects. When the light source changes from D65 to A, the calculated hue angle shifts to the complementary area of the A light source, which is contrary to the CVS measurement result. The D65 light source is more suitable for the colour presentation and classification of bluish-green serpentinite.
Subject
Geology,Geotechnical Engineering and Engineering Geology
Reference57 articles.
1. Deciphering the tectonic-geodynamic context of the gem-quality “noble serpentine” deposit formation combining microstructural, chemical and micro-Raman analyses in Palaeozoic olivine-bearing marbles and serpentine-hosting rocks (Pizzo Tremogge, Margna unit—Austroalpine, Val Malenco—Central Alps, Italy);Zucali;Ore Geol. Rev.,2017
2. Gem-Quality Serpentine from Val Malenco, Central Alps, Italy
3. Serpentinite: What, Why, Where?
4. Insights into the antigorite structure from Mossbauer and FTIR spectroscopies
5. A study on the composition and properties of Xiuyan jade in Liaoning Province;Zhang;Acta Mineral. Sin.,2002
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献