[argyllcms] Re: DeviceLink Profile refining

On 2/11/07, Gerhard Fuernkranz <nospam456@xxxxxx> wrote:


ISOcoated.icc assumes a paper white of

    $ argyll60x iccdump -t wtpt -v3 ISOcoated.icc
    XYZArray:
      No. elements = 1
        0:  0.867828, 0.897430, 0.780685
        [Lab 95.890080, 0.468833, -3.446925]

What is the measured color of your proofing paper?

Regards,
Gerhard




Hello,

First, thanks for all your answers.

I cannot tell you exactly the measured WP( I am at home ), but the dE is
somewhere around 0.6.
Actually, for CMYK%( 0, 0, 0, 0 ), an unrefined device link outputs CMYK%(
0, 0.4, 0.4, 0.0 ). This is the same result as the printer profile.

After the first step of refining, the patch starts turning to magenta: ( 0,
0.8, 0, 0 )

Again, there is a relatively small number of patches( when compared with the
target size ) which do not improve after the first step. That is why I asked
if you guys find correct the idea to ignore corrections that make the
abstract profile worse for some regions of the CLUT.

I forgot to mention, but it is very important to me to make the patches
improve or stabilize ( but not to get further apart from the reference )
right after the first step.



Best regards,
Marcel.

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