Uniform color space for 10° visual field and OSA uniform color scales

A uniform-color-scale diagram for a 10° visual field is derived from the Optical Society of America Uniform Color Scales lattice. The 100 diagram is obtained from the 1964 CIE (x10, y10) chromaticity diagram by the application of two successive transformations: the first is a transformation of appropriate angle variables defined in the CIE (x10, y10) chromaticity diagram and related to two opponent processes; the second is a dilatation that mixes the opponent processes linearly.