IMPRESSION EVALUATION OF DECORATIVE FILMS USING THE SPECTRAL RADIANCE RATIO (1)

Influence of Color on the Spectral Radiance Ratio

抄録

Previous studies have reported that depth perception is a major factor in the visual impression evaluation of various materials, such as wood and metal, and that the spectral radiance ratio may be involved in the depth perception evaluation of red materials. In this study, we focused on decorative films, that have been widely used in products in recent years and investigated the influence of their transparent layers and color on the spectral radiance ratio. As a result, it was confirmed that the thickness of the transparent layer on the surface of most decorative films has almost no effect on the spectral radiance ratio. It was also found that the spectral radiance ratio can be expressed in various colors, such as red, green, and blue. Furthermore, it was shown that the difference between the maximum and minimum values of the spectral radiance ratio under the highlight, which is close to the specular reflection light from the decorative films, has a high correlation with saturation and is related to impression evaluation.