Re: Achieve GIMP bump map effect with ImageMagick

>Is there any way to improve the whole process?


You can control the strength of the watermarking by changing the 
parameter 20 to a larger or smaller number (larger will stand out 
more).

You can control the amount of shading on the letter by changing the 
two angles. The first angle is the direction of the light and the 
second angle is the altitude of the light.

see http://www.imagemagick.org/Usage/transform/#shade and 
http://www.imagemagick.org/Usage/compose/#watermark