Re: Converting to a single-color image (duotone sans black channel)

>Hello,
>
>Apologies if I'm missing something obvious, I'm trying to work out 
>how to convert an image to a single colour - much like grayscale but 
>colorised. Effectively what I'm trying to do is replicate the effect 
>of Photoshop's Screen blending mode when the top layer is a solid 
>color. I've put up an example to compensate for my inability to 
>articulate this properly here: http://sho.ch/otterconvert.jpg
>
>I can do a duotone easily enough but this has me stumped. It would 
>also make my life notably easier if it was a single invocation of 
>convert.
>
>Any guidance would be greatly appreciated.


see -tint and related techniques at 
http://www.imagemagick.org/Usage/color/#tinting

also if you are on unix, see my script tintilize at 
http://www.fmwconcepts.com/imagemagick/index.php


Fred