GIMP, GNU Image Manipulation Program is the most popular free opensource Image manipulation program that brings the feel of working on Adobe Photoshop. GIMP is a versatile graphics manipulation package.
Some of the cool features include
Each task requires a different environment and GIMP allows you to customize the view and behavior the way you like it. Starting from the widget theme, allowing you to change colors, widget spacings and icon sizes to custom tool sets in the toolbox.
Numerous digital photo imperfections can be easily compensated for using GIMP. Fix perspective distortion caused by lens tilt simply choosing the corrective mode in the transform tools. Eliminate lens’ barrel distortion and vignetting with a powerful filter but a simple interface.
The channel mixer gives you the flexibility and power to get your B/W photography stand out the way you need.
GIMP is ideal for advanced photo retouching techniques. Get rid of unneeded details using the clone tool, or touch up minor details easily with the new healing tool. With the perspective clone tool, it’s not difficult to clone objects with perspective in mind just as easily as with the orthogonal clone.
GIMP includes a very unique support for various input devices out of the box. Pressure and tilt sensitive tablets, but also a wide range of USB or MIDI controllers. You can bind often-used actions to device events such as rotating a USB wheel or moving a MIDI controller’s slider. Change the size, angle or opacity of a brush while you paint, bind your favorite scripts to buttons
The file format support ranges from the common likes of JPEG (JFIF), GIF, PNG, TIFF to special use formats such as the multi-resolution and multi-color-depth Windows icon files. The architecture allows to extend GIMP’s format capabilities with a plug-in.
To install GIMP on openSUSE,
SAIBABA:~ # yast2 –install gimp
This should install GIMP and add the menu item under Applications – Graphics