Quantifying Visual Perception of Gloss, Distinctness of Image and Orange Peel of Automotive Finishes Utilizing a Visually Spaced Grey Scale

In this study, attempts were made to quantify appearance perception of automotive finishes based on visual assessed data of 7 observers. To this end, three physical scales of appearance attributes, namely specular gloss, distinctness of image and orange peel were prepared using white and metallic black automotive finishes. The scales were visually evaluated under a 45/0 illumination and observation geometry by means of a grey scale technique, and observers accuracy were calculated using appropriate statistical parameters. The results showed that there seems to be a noticeable difference between the visual assessment of orange peel in comparison with specular gloss and distinctness of image. Moreover, it was found that quantification of visual perception of appearance attributes for white samples is much more difficult than black samples.