Interrelation of the Swiss Colour Atlas (SCA-2541) and the Munsell Color Order System
✍ Scribed by Neville S. Smith; Fred W. Billmeyer Jr.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 242 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0361-2317
No coin nor oath required. For personal study only.
✦ Synopsis
The CIE tristimulus values of measured Swiss etry and notational constructs of the NCS and the perceptual spacing ideals of the Munsell system. For example, the Colour Atlas samples were converted to Munsell notations using a colour notation conversion program. A se-SCA-2541 system is similar to the NCS in that it defines a closed colour space based on constant hue equilateral trian-lected subset of SCA-2541 sample points was chosen: the samples on the fully populated regularly spaced hues 6, gles with black, white, and full-colour content at the apexes, and with a simple relationship linking black, white, and full-12, 18, 24, 30, 36, 42, 48, 54, and 60. The resulting Munsell notations were plotted onto Munsell Value-colour content. Both the NCS and SCA-2541 system have two achromatic axes based on blackness and whiteness, Chroma and Hue-Chroma planes and analysed for regularity of spacing and hue distribution around the achro-unlike most of the other major colour order systems that have a single achromatic axis usually based on lightness matic axis. An earlier article has detailed the interrelation between the Natural Color System (NCS) and the Munsell (OSA-UCS and Colorcurve) or its complement, darkness (DIN 6164). However, the NCS is based on the six claimed Color Order System using similarly constructed charts. Comparison is made with the sample spacing of the NCS elementary colours of black, white, yellow, red, blue, and green with the four chromatic elementaries spaced at 90Њ and SCA-2541 points when mapped into Munsell colour space, to determine similarities and differences between around the hue circle, in contrast to the Munsell and SCAthese two geometrically similar systems; both are double 2541 systems, that adopt a more perceptual spacing of colcones forming equilateral triangular constant hue planes.
ours around the achromatic axis.