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Bug#553359: Licensing issues

Are you about post from JimC?
"This was in part due to Paul J. Lee, who collaborated with Hirakawa
Keigo (the original co-author of AHD algorithm as part of his Ph.D

If I understand everything correctly - author of VCD is Paul Lee "(the
original co-author of AHD algorithm as part of his Ph.D thesis)"

In this thread you can see also ejmartin (one of the authors of AMaZE),
Iliah Borg (co author of libraw and RPP) and other clever boys, skilled
in raw development.

And when you dig into the code of ahd_interpolate_mod.c you can see:

if (verbose) fprintf (stderr,_("AHD interpolation (modified for

So question: Which refinements are better refinements? :-)

Strictly speaking in VCD implementation we have 3 different demosaicing:
1) modified ahd
2) mixed modified_AHD and VCD. This is what named VCD in darktable
3) VCD
Demosaicing named AHD in darktable is from dcraw (libraw).

PS: I'l submit patches in 1-2 days.

On Tue, 2010-09-07 at 23:27 +0200, Jose Carlos Garcia Sogo wrote:
> BTW, shouldn't be using the versions for AHD that are in dcraw.c??? I
> suppose those have some refinements, and that is what this post seems
> to say:
> http://forums.steves-digicams.com/nikon-dslr/164000-better-shooting-raw-converting-jpg.html

Andrey Kaminsky

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