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The GNU Image Manipulation Program, commonly known by its acronym GIMP (/ ɡ ɪ m p / ⓘ GHIMP), is a free and open-source raster graphics editor [3] used for image manipulation (retouching) and image editing, free-form drawing, transcoding between different image file formats, and more specialized tasks.
Most user guides contain both a written guide and associated images. In the case of computer applications, it is usual to include screenshots of the human-machine interface(s), and hardware manuals often include clear, simplified diagrams. The language used is matched to the intended audience, with jargon kept to a minimum or explained thoroughly.
GEGL is modelled after a directed acyclic graph, where each node represents an image operation (called "operators" or "ops"), and each edge represents an image.Operations can in general take several input images and give several output images, which corresponds to having several incoming edges (images) and several outgoing edges (images) at a given node (operation).
GTK (formerly GIMP ToolKit [2] and GTK+ [3]) is a free software cross-platform widget toolkit for creating graphical user interfaces (GUIs). [4] It is licensed under the terms of the GNU Lesser General Public License, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the Wayland and X11 windowing ...
where a is the value of a color channel in the underlying layer, and b is that of the corresponding channel of the upper layer. The result is most typically merged into the bottom layer using "simple" (b over a) alpha compositing (making the actual formula f ( a , b ) = a l p h a ( b , a ) {\displaystyle f(a,b)=alpha(b,a)} ), but other Porter ...
English sources preferred: Do check to see if an English-language citation is available that is the equivalent of the foreign-language citation (for example an authorized translation), since that's easier for readers to verify. If you do find one, you don't need to include the foreign-language citation.
GimPhoto is a modification of the free and open source graphics program GNU Image Manipulation Program (GIMP), with the intent to be a free replacement to Adobe Photoshop. [6] It has a new menu layout, new brushes and gradient sets.
FileOptimizer - A Windows GUI program (recommended for beginners) that uses multiple open source and freeware tools (including most of those listed here) to optimize a large number of media filetypes. Achieves better compression than any of the others used by themselves.