Hi
To create a RGB Profile I must use :
hProfile := cmsCreateRGBProfile(@WhitePoint,
@Primaries, GammaTables);
The white point is calculated by:
cmsWhitePointFromTemp(WhitePointValue, @WhitePoint);
By default WhitePoint is 6504
I give the primaries.
By default I set them to :
Primaries.Red.x := 0.6400;
Primaries.Red.y := 0.3300;
Primaries.Red.YY := 1.0;
Primaries.Green.x := 0.3000;
Primaries.Green.y := 0.6000;
Primaries.Green.YY := 1.0;
Primaries.Blue.x := 0.1500;
Primaries.Blue.y := 0.0600;
Primaries.Blue.YY := 1.0;
The gamma tables are generally calculated by
cmsBuildGamma:
GammaTables[1] := cmsBuildGamma(256, GammaRed);
GammaTables[2] := cmsBuildGamma(256, GammaGreen);
GammaTables[3] := cmsBuildGamma(256, Gammablue);
I did remark that:
1 - If I create an icm file with my default values and
all gammas build with value 1.
2 - If I create an icm file with my default values
and other gammas (for red, green and blue).
3 - If create an xtransform from the file 1 to the
file 2
The result of my transform is exactly like if I apply
the gamma tables used to create my file 2 to my
images.
My boss wants to construct some curve with a visual
component.
I try to save a modified GammaTables in an icm file.
To save my file I do:
Im using a default primary color.
Im using the default white point.
I build the gammaTables.
I modify the value of the gammaTables with my wanted
value.
I create my profile with (cmsCreateRGBProfile).
Unfortunately when I reopen my icm file and apply the
profile to an image, I see that the saved curve in the
file is not the curve I have modified.
What is my error?
Thank
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