Color Research and Application, Vol.19, No.5, 351-362, 1994
APPEARANCE (CESIA) - CONSTRUCTION OF SCALES BY MEANS OF SPINNING DISKS
The name cesia has been proposed for the aspect of appearance that deals with the sensations aroused by differences in the spatial distribution of light. lit a previous article, a system of cesias was presented. This included a notation system and a solid with three dimensions or variables in which the sensations were organized. The aim of this article is to report the development of scales of cesia, constructed with the aid of rotatory disks holding percentages of materials producing the stimuli for the five primary sensations of cesia. These primary sensations are: transparence, specular reflection, translucence, diffuse reflection, and absorption (black). Different geometries of observation were needed to evaluate the scales. Numerically, they were built using a power function between the magnitudes of the sensations and the magnitudes of the stimuli. This research refutes the as sumptions that the geometric attributes of appearance cannot be organized in a coordinate system and that synthetic stimuli cannot be produced for these attributes just as they, are produced for color by the mixture of three lights.