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.
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.