On 02/28/2017 04:20 PM, Marti wrote:
> Hi Elle,
>
> Profiles seems ok, and tifficc and other programs read them just fine.
> May I have the " red-no-alpha.tif" tiff file? It seems to me this is the
> source of trouble.

Hi Marti, and thanks! for checking into this. Here's a link to the file:

http://ninedegreesbelow.com/files/test-images/red-no-alpha.tif

Best,
Elle

>
> Regards
> Marti
>
> -----Original Message-----
> From: Elle Stone [mailto:ellest...@ninedegreesbelow.com]
> Sent: Tuesday, February 28, 2017 8:21 PM
> To: Lcms Liste <lcms-user@lists.sourceforge.net>
> Subject: [Lcms-user] tificc reports "Unsupported color space of 9 channels"
> with XYZ profile
>
> Hi All,
>
> I tried to use tificc v6.2 [LittleCMS 2.08] to convert an sRGB image to XYZ
> and got this error message:
>
> [tificc fatal error]: Unsupported color space of 9 channels
>
> One possibility is that the XYZ profile is defective, but it seems to
> produce exactly correct conversions with test images.
>
> So I'm wondering if there might be a problem in tificc itself. Does tificc
> actually support conversions to XYZ?
>
> Here's the command line I used with a sample image called
> "red-no-alpha.tif":
>
> tificc -w32 -i sRGB-elle-V4-srgbtrc.icc -o XYZ-D50-Identity-elle-V4.icc
> red-no-alpha.tif red-tificc.tif
>
> The two profiles can be downloaded here:
> https://github.com/ellelstone/elles_icc_profiles and are located in the
> "profiles" folder.
>
> The code snippet that generates the XYZ profile is as follows:
>
> profile = cmsCreateXYZProfile();
> cmsWriteTag(profile, cmsSigCopyrightTag, copyright); description =
> cmsMLUalloc(NULL, 1); cmsMLUsetASCII(description, "en", "US",
> "XYZ-D50-Identity-elle-V4.icc");
>                               filename =
> "../profiles/XYZ-D50-Identity-elle-V4.icc";
> cmsSaveProfileToFile(profile, filename); cmsMLUfree(description);
>
>
> Thanks! for any help in figuring out what the issue is, whether in
> tificc or in the profile (or both?).
>
> Best,
> Elle
>


-- 
http://ninedegreesbelow.com
Color management and free/libre photography

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