Appeal No. 1999-2040
Application No. 08/475,023 Page 10
col. 3, lines 1-3) refers to single-color, and two-color
combinations of the fundamental colors (R, G, B, C, M, Y). The
actual color of the primary corresponds to the most saturated
point on the gamut boundary (col. 9, lines 36-38). In order to
transform the most saturated input colors to the most saturated
output colors, saturation compression is used (col. 9, lines 41-
44). As shown in figure 18, uniform compression of the
saturation and a lightness shear are used to accomplish the
desired color transformation (col. 10, lines 4-6). The amount of
saturation compression or expansion will be different for each
primary color (col. 10, lines 11-14). The ability to adjust each
primary color individually allows for the alteration of one
region without affecting other regions (col. 12, lines 48-51).
As shown in figures 19-22, colorimetric reproduction is only
maintained for colors on the neutral axis (col. 13, lines 2-4).
"The hue, saturation and lightness of colors which are quite
close to the neutral axis are still changed proportionally due to
the linear taper of the color shifts" (col. 13, lines 4-7).
Figure 25 shows an input color space 10 divided into three
subsets. Spaulding further discloses (col. 14, lines 12- 18)
that:
Referring to FIG. 25, an RGB input color space 10
is divided into three subsets. Subset 12 is the
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