[magick-users] Problems with PerlMagick "Level"

Anthony Thyssen anthony at griffith.edu.au
Sun Nov 11 19:27:50 PST 2007


Kiana Toufighi on  wrote...
| 
| Hi,
| 
| 
| 
| I saw somebody else post the same problem to this list but there was no=20
| satisfactory reply.
| 
| 
| 
| I'm trying to change the contrast of an image is Perl using PerlMagick.=20
| Here's my code:
| 
| $image->Level('black-point'=3D>'10%', 'gamma'=3D>'1.0','white-point'=3D>'90=
| %',=20
| channel=3D>'All');
| 
| 
| 
| Result is that I get an entirely white frame.
| 
| 
| 
| 
| 
| I have also tried:
| 
| $image->Level(level=3D>'10%');
| 
| 
| 
| I get an entirely black frame.
| 
| 
You have a old buggy version of IM.
This was discovered and fixed a couple of months ago.

  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
 -----------------------------------------------------------------------------
  If all else fails, do the exact opposite of what you thought would work.
                                                  -- Dr Whirlwinds 10th law
 -----------------------------------------------------------------------------
     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/


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