Affiliation:
1. Graduate School of Global and Transdisciplinary Studies, Chiba University, Chiba, Japan
2. Graduate School of Science and Engineering, Chiba University, Chiba, Japan
Abstract
Although a physical gloss exists as a physically measurable index, people can also perceive a perceptual gloss on object surfaces. However, the physical gloss does not always match the perceptual gloss. Because the physical gloss is calculated based only on the specular gloss and does not reflect other physical features that affect the perceptual gloss. Thus, we analysed the relationships between physical features and perceptual gloss by measuring many physical properties of object surfaces, including their physical gloss. We prepared 127 flat objects comprising three materials: paper, resin and metal plating. The perceptual gloss was visually evaluated for observation angles of 20°, 60° and 85° using a magnitude estimation method. Multiple measurements were conducted to obtain physical features such as the gloss unit (GU), haze, distinctness of image and high dynamic range luminance. We then constructed prediction models for the perceptual gloss using these physical features and multiple regression analyses. By combining these multiple physical quantities and using the GU in the power scale, the prediction accuracy was improved. By the optimal power index (0.33 for physical gloss in the common prediction model, independent of the observation angle), we found that human gloss perception may be related to brightness perception.
Funder
Japan Society for the Promotion of Science
Subject
Electrical and Electronic Engineering
Reference21 articles.
1. Methods of determining gloss
2. International Organization for Standardization. Paints and varnishes—determination of gloss value at 20°, 60° and 85°. 4th edition. ISO 2813:2014.
3. Commission International de l’Éclairage. Gloss measurement and gloss perception: A framework for the definition and standardization of visual cues to gloss. Vienna: CIE.
4. ASTM International. Standard test method for visual evaluation of gloss differences between surfaces of similar appearance. D4449-15:2021.
Cited by
2 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