Geniet: Help for using ICE Color with a color scale

When using ICE Color (Windows program) with a color scale the following steps can be done:

Download and register ICE Color (version 1.3 or later). It is not expensive, only $30, and it helps future developments by the programmer!
It is important to be sure that the original file has been made properly. See for hints this link.
Open the to be optimized file: File -> Open (Ctrl-O)
For optimum result, I would advice to use only bmp files (so uncompressed files) and not jpg!
Bring file into semi-linear color space: Choice Edit -> Level and gamma correction (or the corresponding icon) and fill in a Gamma of 0.45 for all color channels (top-right, input field which is default=1.0). Press OK and then Render -> Render (or F5). Use the resulting file for the next step.
Load within ICE Color (Open color definition) the RGB values of the reference patches (Destination colors):

sRGB
To download these files from the web, use right click in the browser and Save [Link] Target As.
AdobeRGB
- IFRAO standard scale, version 1994
- IFRAO standard scale, version 2001
- Macbeth ColorChecker (not yet available)
To download these files from the web, use right click in the browser and Save [Link] Target As.

Click once on a color-conversion in color panel (where the Destination color is the reference color for the to-be optimized Source color area) and then click on Pick source color icon (or Ctrl-C).
It could be that some color patches can't be used (check the diagnostics overview and doubling clicking the color-conversion or using Paint Shop Pro or Photoshop), if needed delete the color-conversion (Ctrl-Del).
Select the area of the wanted source color in the picture; by left clicking and then dragging the mouse.
Repeat step 6 until 7 for all color patches.
In case of the IFRAO standard scale there are eight color patches, if one uses a different color/gray scale (like Macbeth ColorChecker or Kodak gray scale) just keep repeating steps 6 to 7 for as many patches as one needs.
Render -> Render (F5) the picture (rendering means in this case optimization/calibration). Use the resulting file for the next step.
Bring file into xRGB color space: Choice Edit -> Level and gamma correction (or the corresponding icon) and fill in a Gamma of 2.2 for all color channels (top-right, input field which is default=1.0). Press OK and Render -> Render (F5) to make the final step in this process.
Save the optimized picture with File -> Save as a bmp file.
Remember that due to the limited amount of color patches in the IFRAO standard scale (or even Macbeth ColorChecker), the optimization/calibration with ICE Color (or any other program) can't be perfect. But it is a good step in the direction. One can always further manipulate the file in one's own program (like Paint Shop Pro (can only handle sRGB) or Photoshop (and make sure Photoshop is in sRGB/AbodeRGB mode [Edit -> Color Settings [Shift+Ctrl+K]-> sRGB IEC/AdobeRGB (1998)]).

Remark:
To above procedure tries to do the optimization process of ICE Color in (semi-)linear space. The problem thought is that the Gamma is unknown of the initital picture (a value of 2.2 is assumed, which is normal for most xRGB color spaces); that is why the step 4) uses a Gamma of 0.45 (=1/2.2). In some cases this could make the behavior of ICE Color inconsistent. The other disadvantage of the above procedure is that at each rendering (F5) the color space gets 8 bits deep and thus loosing valuable dark color information.

All the above information is provided with no warranty. Constructive feedback is very welcome, so let me know.
This work is done independently from any organization or software producer (like: Adobe, Jasc, ICE Graphics or IFRAO) and I have no commercial relations with any of them, furthermore usage of these is totally your own risk.

More information on my investigations with regard to color optimization can be found on this page.

Help for using ICE Color with color/gray scale