On Sat, 12 Sep 2020 at 00:59, John Muccigrosso <
jmuc...@gmail.com> wrote:
>
> Working on a mosaic of photos taken with my iPhone and I run into an error at the stitching phase. enblend reports the following:
>
> enblend: error building color transform from XYZ space to " Apple Wide Color Sharing Profile"
The problem is that the Apples color profile is apparently missing the
conversion matrices required for the conversion to the profile.
Essentially that means you can convert from the Apple Wide Color
Sharing Profile, but you cannot convert to it. See LittleCMS issue
#188 [1].
If the input images have the same profile, enblend keeps the profile
for the output, too. The enblend itself operates in the CIELUV
colorspace when the input images use the same profile, so it needs to
convert both from and to the original profile. Because of the
limitation of the Apple profile this is not possible in your case.
I think the best option regarding keeping the color information
correct is to convert the input images to a different profile that has
similar or larger color coverage. I can't find the coverage of the
"Apple Wide Color Sharing Profile" so I can't tell what standard color
profile would be best, but I would start with the "Adobe Wide Gamut
RGB".
[1]
https://github.com/mm2/Little-CMS/issues/188