
The result is a dramatic speedup in processing, but not without cost–so far, Mihal has not been able to overcome the slower bus speed of the GPU that makes moving data to and from the card siphon away a significant chunk of the time savings. Nona-GPU offloads the processing of distortion correction, photometric correction, and other calculations required to stitch together two images from the system CPU to the parallel processors of modern 3-D graphics cards.
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He also reported on field tests studying how graphic design affects how much attention users pay to license agreements (hint: good design makes users pay attention to the content, which is the behavior open source projects want).Īndrew Mihal described his work with the Nona-GPU branch of the Nona panorama stitcher. The templates attenuate cursor motion mathematically, making it easier to freehand shapes or lines by reducing movements that diverge from the grid. Michael Terry of ingimp presented several projects, including “kinematic templates,” movable overlays that can assist artists by restricting drawing motion. The program also included presentations of ongoing research and new technology demonstrations. So, too, did less widely used graphics applications like panorama utility Hugin, vector editor sK1, and font tool FontMatrix, as well as related projects like the VIPS image processing library, the PiTiVi video editor, and the Open Font Library, which fosters the development of openly licensed fonts and is building an infrastructure to support them in modern Web browsers and applications.

The major applications in the Linux graphics suite– Gimp, Inkscape, Scribus, and Blender–each sent a delegation of developers and contributed a “state of the code” talk to the program, showcasing recent work and offering previews of upcoming releases. Around 100 programmers and users gathered each of the four days, for talks, demos, open discussions, and birds-of-a-feather sessions.

The 2009 LGM was held May 6-9 in Montreal, Canada, at the École Polytechnique on the campus of the Université de Montréal.
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Since 2006, developers and supporters of free software graphics applications have met annually for Libre Graphics Meeting (LGM), a conference and workshop where they can exchange ideas, catch up on recent advances, and collaborate on new technologies.
