Alex Robinson on wrote...
| I have an image on a transparent background. I would like to fill the
| image, preserving the background transparency and the varying degrees
| of opaqueness of the actual image detail.
|
| ie. to convert
|
| http://www.fu2k.org/alex/images/junk/asterisk_black.png
|
| to something like
|
| http://www.fu2k.org/alex/images/junk/asterisk_fuschia.png
|
| In Photoshop, I would simply choose 'preserve transparency' (either
| through the fill dialog or checking the lock on the layer. In
| ImageMagick I am a relatively clueless idiot and I don't know where
| to start on this task.
|
| I'm using PerlMagick, but incantations that use the command line will
| be just as helpful.
The equivelent operation in IM is -colorize which automatically
preserves transparency...
convert asterisk_black.png \
-fill fuschia -colorize 100% \
asterisk_fuschia.png
A value of 100% is a total replacement of all non-transparent color
components. 50% will overlay a 50% transparent color over the
existing color.
See.. IM Examples, Color Modifications,
Uniformly Color Tinting Images
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/color/#tinting
If your original image is mostly grey, with some black and white
highlights You can color the grey and keep the highlights using -tint
See IM Examples, Color Modifications,
Color Tinting Greys
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/color/#tint
For information on such grey highlight images.. see..
Image Transformations, Creating Overlay Highlighting
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/transform/#shade_overlay
The is part however is much more 'expert' level. And is more about
using -shade to generate 3-D shapes. The ideas presented are valid for
all these types of images.
Enjoy...
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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As a computer, I find your faith in technology amusing.
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Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/
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