Request support for 16-bit TIFF (=compile with --with-quantum-depth=16)

[Vesa K]

Binary package hint: graphicsmagick

Can you compile graphicsmagick-imagemagick-compat --with-quantum-depth=16 parameter?

graphicsmagick comment:
http://sourceforge.net/tracker/index.php?func=detail&aid=2942292&group_id=73485&atid=537937

Then Octave should support 16-bit TIFF too.
Octave bug: http://savannah.gnu.org/bugs/index.php?30715

maverick (10.10)

$ identify Pictures/3007.tif
Pictures/3007.tif TIFF 3514x2340 3514x2340+0+0 16-bit DirectClass 49.37MB 0.000u 0:00.000
$ gm identify Pictures/3007.tif
Pictures/3007.tif TIFF 3514x2340+0+0 DirectClass 8-bit 47.1M 0.000u 0:01

Thanks.

[Vesa K (j2007jokunen)]

Sorry not graphicsmagick-imagemagick-compat (I not even use this)

but compile these --with-quantum-depth=16 parameter
libgraphicsmagick++3: format-independent image processing - C++ shared library
libgraphicsmagick3: format-independent image processing - C shared library

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Carnë Draug (carandraug)]

Actually, could this maybe be compiled with 32 instead? Or maybe with both?

Until not far ago, it was not simple to have multiple istances of the Magick++ library but this has changed. It is now possible to enable modules when compiling GraphicsMagick. See the new configure option:

--with-modules Image coders and process modules are built as loadable modules which are installed under the directory [prefix]/lib/GraphicsMagick-X.X.X/modules-QN (where 'N' equals 8, 16, or 32 depending on the quantum depth) in the subdirectories 'coders' and 'filters' respectively. The modules build option is only available in conjunction with --enable-shared.

[Brian the Lion (rossabri)]

Bump? There has been no movement on this issue upstream in quite some time. Can we get it moving again?

[మంగిపూడి కోదండరామ్ (Mangipudi Kodanda Ram) (kodanda)]

This is affecting image processing in Octave, and is forcing to use MATLAB instead; driving away from FOSS. Can the graphicsmagick be compiled with 16 bit to work with octave?

I see a lot of recommendations in the forums from the developer of graphicsmagick to use 16 bit. Is there any strong reason not to go for 16 bit?

[Faekynn (faekynnn-deactivatedaccount)]

It woudl really be great, if this could be done!

[Logan Rosen (logan)]

This bug was fixed in the package graphicsmagick - 1.3.20-4

---------------
graphicsmagick (1.3.20-4) experimental; urgency=low

  * Test build with QuantumDepth 16 (closes: #557879).
  * Update Standards-Version to 3.9.6 .

 -- Laszlo Boszormenyi (GCS) <email address hidden> Wed, 28 Jan 2015 17:56:41 +0000