On the basis of signal theory, we analyse the different information content
of colour stimuli that correspond to variations along the red-green and ye
llow-blue channels (or chromatic signals). The experimental results for sti
muli generated by two CRT colour monitors and extended to handmade samples
show a higher chromatic contrast when pairs of stimuli are generated by red
-green variations than by yellow-blue variations. This information should b
e taken into account in such applied areas as colour reproduction, image pr
ocessing, colour displays, and computer graphic design, which use chromatic
information based on human chromatic perception in order to achieve a more
effective presentation of colour information. (C) 2000 Elsevier Science B.
V. All rights reserved.