Impact of surface texture on the perceptual and instrumental gloss
Lack of a simple relation between the visual gloss and the texture
In a new paper, several glossy samples with different textures were prepared, and their gloss values were measured. The texture of the surfaces was analysed using image processing methods. Moreover, a visual comparison test was performed to assess the gloss visually. The results showed a reasonable relation between the instrumental gloss and the texture analysis parameters; as the surface roughness increased, the instrumental surface gloss decreased.
Nevertheless, the visual assessment results differed from the instrumental measurements. As surface texture increased, gloss dropped, and by reaching a certain point, gloss increased significantly. After that, the gloss decreased again as the texture increased. These results demonstrated the lack of a simple relation between the visual gloss and the texture analysis parameters, which emphasizes finding a proper surface texture parameter with a good relationship with the visual gloss.
The study has been published in Progress in Organic Coatings, Volume 171, October 2022.