This CIE Standard specifies the method of calculating the coordinates of the CIE
1976 L*u*v* colour space including correlates of lightness, chroma, saturation and
hue. It includes two methods for calculating Euclidean distances in this space to
represent the relative perceived magnitude of colour differences. It also specifies the
method of calculating the coordinates of the u',v' uniform chromaticity scale diagram.
The Standard is applicable to tristimulus values calculated using the colourmatching
functions of the CIE 1931 standard colorimetric system or the CIE 1964
standard colorimetric system. The Standard may be used for the specification of
colour stimuli perceived as belonging to a reflecting or transmitting object, where a
three-dimensional space more uniform than tristimulus space is required. This
includes self-luminous displays, like cathode ray tubes, if they are being used to
simulate reflecting or transmitting objects and if the stimuli are appropriately
normalized. The Standard, as a whole, does not apply to colour stimuli perceived as
belonging to an area that appears to be emitting light as a primary light source, or
that appears to be specularly reflecting such light. Only the u',v' chromaticity diagram
defined in Section 4.1 and the correlates of hue and saturation defined in Section 4.3
apply to such colour stimuli.
| Number of Pages : | 12 |
| Published : | 03/01/2009 |
