On Tue, 23 Oct 2007, Hal V. Engel wrote:
>
> I find several references on the web to a CIELab ITU/Fax profile named
> iitufax.icm but I was not able to find a copy of it.  But if it is available
> or if there are enough specifications to create one then using lcms to
> convert between the normal colorspaces that we see used for most jpeg images
> and CIELAB ITU-Fax T.43/T.42 in either direction should be almost trivial to
> implement.

Is it possibly this file from the lcms profiles collection?

LCMSLABI.ICM
   little cms Relative L*a*b* identity profile
   WhitePoint : D50
   XYZ=(1.0, 1.0, 0.8)
   Lab=(100.000, 0.016, -0.016)
   (x,y)=(0.346, 0.359)
   Hue=314.75, Chroma=0.02


or is FAX different?

There is also:

Tifflab8spac.icm
   TiffLab8Spac D65  (c) Linotype-Hell
   WhitePoint : D65 (daylight)
   XYZ=(1.0, 1.0, 1.1)
   Lab=(100.000, -2.379, -19.401)
   (x,y)=(0.313, 0.329)
   Hue=263.01, Chroma=19.55


Bob
======================================
Bob Friesenhahn
[EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/


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