Different method of compositing watermark with Imagemagick?

[Oceanwatcher]

I like watermarking my pictures, but it is close to impossible to make a nice watermark that display well in all kinds of pictures.

If Imagemagick allows different methods for compositing I would love to be able to use a method that made the watermark dark over a light background and light over a dark background....

Could this be something to consider in the new version?

[Pekka]

If you can share the imagemagick command sequences to do those it would make it faster/easier for me to check if and how implement it.

[AjP]

if you use PS, you can create action to insert watermark to any or all selected images and use it anytime you want it, no matter of size or dimmentions of pics

[Oceanwatcher]

if you use PS, you can create action to insert watermark to any or all selected images and use it anytime you want it, no matter of size or dimmentions of pics

Exactly what I am trying to avoid. I prefer to let EE handle resizing and watermarking.

[Oceanwatcher]

If you can share the imagemagick command sequences to do those it would make it faster/easier for me to check if and how implement it.

I will investigate and let you know.

[Oceanwatcher]

I have been playing around a little bit with blending modes in Photoshop, and it seems that if you use white in your watermark, and set the blending mode to "difference" you get exactly the result I am looking for.

"Difference" is available as an operator for Imagemagick, check

http://www.imagemagick.org/script/command-line-options.php#compose

Maybe it can be used this way with the existing 1.5 rc4?