[magick-users] default depth of montage

[Anthony Thyssen]

James Bigler on  wrote...
| I'm a big fan of ImageMagick, so thanks for sharing this cool work.
| 
| I used montage to stitch 3 images together.  The input images all had a 
| depth of 8, but the resulting image from montage had a depth of 16.  I 
| have some questions.
| 
| 1.  Should montage output an image with the same depth as the input images?
| 2.  Is this is effect of the quantum size?
| 3.  Can I determine the quantum size from a command line utility?
| 
| montage -geometry 640x480 -tile 2x2 -frame 1 \
| case1/t.ppm case3/t.ppm case7/t.ppm m.ppm
| 
The default depth is the IM compiled quality level.  either Q8, 16 or 32

If you like a different depth set   -depth 8  on a higher Q level IM.

You can also select betwwwn binary and text formats for the output.

NOTE while NetPBM formats allow ANY depth including non-powers of two!
IM only provides limited depth selections for this format.  I have
reported this and proposed a solution, but no action has been taken.

See IM Examples,  NetPBM formats
   http://www.imagemagick.org/Usage/formats/#netpbm

Proposal for NetPBM depth selection...
   http://www.imagemagick.org/Usage/bugs/future/#quality


  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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    May a thousand camels spit in your keyboard!      
                                         -- Anthony Thyssen (no offence)
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/