Am 09.01.19 um 15:43 schrieb Michael Below:
Hi,
I remember similar issues some years ago, iirc only imagemagick was able to
process similar tiff images correctly. I think most other programs were using a
certain library (gtk?) that caused these issues.
Good luck!
Any knowledge if GraphcisMagick is able to read these files correctly?
Background of my question: darktable has two(*) places where it would
read tiff files. The first one is it's internal routine in
common/imageio_tiff.c. If this fails (and the file does not get
processed by rawspeed) we give it a last try with GraphicsMagick.
I am quite sure that our imageio_tiff is not able to handle the
Heidelberg files correctly (and we will probably not have the capacity
to change that). However, it might be more easy to properly detect them
as not processable, fail at that step and thereby delegating it to
GraphicsMagick.
Ulrich
(*) Well, in fact three places, as many raw files are also tiff files
internally which implies that rawspeed might also try to read the files
in question and fail. That's t.b.c.
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