[Gzz-commits] gzz/Documentation/Manuscripts/Paper paper.tex

[Janne V. Kujala]

CVSROOT:        /cvsroot/gzz
Module name:    gzz
Changes by:     Janne V. Kujala <address@hidden>        02/12/01 15:35:45

Modified files:
        Documentation/Manuscripts/Paper: paper.tex 

Log message:
        Edit

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/gzz/Documentation/Manuscripts/Paper/paper.tex.diff?tr1=1.190&tr2=1.191&r1=text&r2=text

Patches:
Index: gzz/Documentation/Manuscripts/Paper/paper.tex
diff -u gzz/Documentation/Manuscripts/Paper/paper.tex:1.190 
gzz/Documentation/Manuscripts/Paper/paper.tex:1.191
--- gzz/Documentation/Manuscripts/Paper/paper.tex:1.190 Sun Dec  1 15:21:03 2002
+++ gzz/Documentation/Manuscripts/Paper/paper.tex       Sun Dec  1 15:35:45 2002
@@ -569,7 +569,20 @@
 The final image contains convex combinations of
 the palette colors.
 
+Usually color perception is divided to lightness, hue, 
+and saturation (the chromatic purity), which are nonlinearly
+related to the usual RGB values.
 
+There is one problem in using the hue angles 
+of the CIE $L^*a^*b^*$ \cite{cie86colorimetry} color space ---
+it produces too much blue and too little yellow in 
+the range of light colors.
+Therefore, we actually map the angles to hues 
+using a color circle with
+evenly spaced ``primary'' hues.
+To balance the blue bias, we use seven primaries
+with orange added between the usual hues 
+of the six saturated corners of the RGB cube.
 
 %In addition to choosing perceptually diverse colors, 
 %there is the the question of how many colors to use.
@@ -587,14 +600,11 @@
 %Additionally, the colors should be ``balanced'' and 
 %perceptually uniformly distributed 
 
-Usually color perception is divided to lightness, hue, 
-and saturation (the chromatic purity), which are nonlinearly
-related to the usual RGB values.
-A color space is called perceptually uniform, if the Euclidian
-distance of coordinates approximately corresponds to the
-perceived difference of color.
-For example, the CIE $L^*a^*b^*$ \cite{cie86colorimetry}
-color space is reasonably perceptually uniform.
+%A color space is called perceptually uniform, if the Euclidian
+%distance of coordinates approximately corresponds to the
+%perceived difference of color.
+%For example, the CIE $L^*a^*b^*$ \cite{cie86colorimetry}
+%color space is reasonably perceptually uniform.
 
 To produce chromatically compatible colors, we choose 
 the hue angles for the base colors of a single background
@@ -609,17 +619,6 @@
 of the palette, the interpolated colors would easily span too
 much area on the color circle.
 The saturations are chosen by an ad hoc distribution.
-
-There is one problem in using the hue angles 
-of the CIE $L^*a^*b^*$ color space ---
-it produces too much blue and too little yellow in 
-the range of light colors.
-Therefore, we actually map the angles to hues 
-using a color circle with
-evenly spaced ``primary'' hues.
-To balance the blue bias, we use seven primaries
-with orange added between the usual hues 
-of the six saturated corners of the RGB cube.
 
 % Uniform? 
 %  1) define term