[magick-users] black to white

[Anthony Thyssen]

On Thu, 30 Apr 2009 20:38:13 -0600
Bob Meetin <bobm at dottedi.biz> wrote:

| found this example to swap a black background for white.
| 
| convert image_black_bg.gif -fill white -opaque black image_white_bg.gif
| 
| looks like it works
| 
just use -negate to swap black nad white!!

   convert image_black_bg.gif -negate image_white_bg.gif

See  http://www.imagemagick.org/Usage/color/#negate


  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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             "Hakuna Matata"   -->  "No Worries"
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/