RT Journal Article
T1 Statistics of color-matching experimental data
A1 Carreño Sánchez, Fernando
A1 Zoido Chamorro, Jesús Manuel
AB By assuming that color matches are normally distributed in XYZ space, we present a rigorous statistical technique to obtain regions of equally noticeable chromaticity differences. The probability density function of color matches in (x, y, Y) space is calculated according to standard techniques in probability theory. The geometry of the chromaticity thresholds is computed for various confidence levels α. Because of the asymmetry of the probability density function in (x, y, Y) space, the chromaticity thresholds are not symmetrical around the color center. The asymmetries depend on the color center, and they increase when high confidence levels (α < 0.32) are considered. It is our opinion that the technique proposed here can provide a useful tool for checking and evaluating deviations from the elliptic geometry of the chromaticity thresholds. It is formally demonstrated that regions of equally noticeable chromaticity differences are not ellipses when the normality hypothesis is assumed in XYZ space.
PB The Optical Society Of America
SN 1559-128X
YR 1999
FD 1999-01-01
LK https://hdl.handle.net/20.500.14352/60276
UL https://hdl.handle.net/20.500.14352/60276
LA eng
NO Received 4 June 1998; revised manuscript received 7 October1998.
DS Docta Complutense
RD 8 jun 2025