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appearance, <perceptual>
aspect of visual perception through which an object is perceived to have attributes such as size, shape, colour, texture, gloss, transparency, and opacity
Note 1 to entry: In psychophysical studies, the term "appearance" is used in the sense of visual perception in which the spectral and geometric aspects of a visual stimulus are integrated with its illuminating and viewing environment.
Note 2 to entry: This entry was numbered 17-51 in CIE S 017:2011.