Recently, I came across some really nice Filters and Scripts for The Gimp.  If you are not familiar with The Gimp (The GNU Image Manipulation Program), it’s high quality open source photo/image editing and manipulation software.

Check out these Gimp filters:
http://www.gimphelp.org/script24.shtml
http://gimpfx-foundry.sourceforge.net/

Here is a Cottonwood Grove image that I decided to use as my test image for experimenting with some of these Gimp filters.  Interesting results!  You can really see the effects a lot more clearly if you click on each image to view a larger version.

Cartoon Filter

Cartoon Filter

Cartoon Quick

Cartoon Quick

Pastel

Pastel

Line Art

Line Art

Line Art B&W

Line Art B&W

Synthetic Edges

Synthetic Edges

Toned Line Art

Toned Line Art

Slide

Slide