Image matting tool cuts out objects in photos using an alpha-matting technique. While clear cuts can be found for all objects that are clearly separated from their environment, objects with fuzzy borders and semi-transparent areas don't have a clear outline. The tool creates an alpha channel that defines the degree to which the background shines through the foreground for every pixel. The background color can then be subtracted. The user defines a rough boundary of an object with a large brush and a high-quality segmentation is generated. Problematic areas can be edited manually.
CinePaint is a deep paint image retouching tool that supports higher color fidelity than ordinary painting tools. CinePaint is used to retouch feature films and for professional photography. CinePaint opens high fidelity image file formats such as DPX, 16-bit TIFF, and OpenEXR, and conventional formats like JPEG and PNG. It has a flipbook for movie playback of image sequences in RAM. It supports 8-bit, 16-bit, and 32-bit color channels, HDR, and CMS.
SAGA GIS (System for Automated Geo-scientific Analysis) is a geographical information system (GIS). The SAGA GIS API supports grid data like digital terrain models and satellite images, vector data, and tables. This API makes it easy to implement new algorithms and exempts the developer from hassle programming overhead like user-interface design or file I/O. SAGA GIS comes with a large collection of modules, in areas of terrain-analysis, geo-statistics, image processing, and process simulation.
ingimp (Instrumented GIMP) is an instrumented version of the GNU Image Manipulation Program that automatically collects usability (usage) data, such as the commands used, the size of images worked on, and so on. This data is transmitted to ingimp.org where it is analyzed and available for anyone to download. ingimp is intended to shed light onto how the software is actually used in practice. It can be used as a snap-in replacement for the GIMP.
FrAid (Fr[actal] Aid) is a programming language that is appropriate for mathematical computations, visualization, batch processing, and more. It features both a standalone application that provides a programming environment for the language and a system for integrating the language with Java. The Java interface allows mathematical equations and formulas to be used with Java code, making it easier to process numerical computations, symbolic computations, imaging, CAD, and more.
Tux Paint is a simple and entertaining drawing program geared towards young children. It has a simple interface, sound effects, and a cartoon character (Tux, the Linux penguin). Along with drawing brush strokes, lines and shapes, you can also enter text and place "rubber stamp" (or "sticker") images on the picture. Tux Paint is extensible, and could be useful in an educational environment (such as a grammar, elementary, or grade school). It's portable across numerous platforms, and runs well even on slower systems like the Pentium 133MHz.