Chair for Computer Aided Medical Procedures & Augmented Reality
Lehrstuhl für Informatikanwendungen in der Medizin & Augmented Reality

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TUM Informatik-Kolloquium: Jun. Prof. Dr. Oliver Bimber

Termin: Donnerstag, den 27.07.06, 17:30 Uhr

Ort: Raum 00.08.038 (MI-Gebäude, Campus Garching)

No Screens Required!

Information Displays play an important role in our society. Television, for instance, is currently following the evolution of graphics displays ? a transformation from small and bulky cubes to large and flat planes. Projectors allow creating images that are larger than the devices themselves. Thus, they enable efficient human-computer interfaces and enable the visualization of two- and three-dimensional content. Projection-technology is evolving rapidly ? enabling a variety of new display forms. A similar evolution can be observed for graphics chips. Today?s GPUs streaming-oriented SIMD architectures enable a variety of real-time computations that make many new applications possible ? including novel projection techniques. Current research activities investigate conceptual and technical possibilities for realizing graphical visualizations in real world environments. They strive for enabling immersive and semi-immersive projection experiences without the need for special display surfaces or permanent screen configurations. Enabling visualizations without projection-optimized screens but on complex everyday surfaces leads to new applications in many fields ? but also to several difficulties: The projected images are geometrically warped, color and intensity blended, and regionally defocused. Thus, projected images have to be corrected in real-time and on a pixel-precise basis. In addition, other surface properties, such as depth information and global light modulation effects can be extracted and human perception factors can be taken into account for improving the final image quality. This talk begins with a brief discussion on projector-based illumination solutions that allow overcoming several limitations of spatial augmented reality displays. It focuses on real-time image correction techniques, such as geometric warping, radiometric compensation, reverse radiosity, and multi-focal projection that enable visualizations on complex surfaces in everyday environments. Finally, a generalized correction approach based on the reversed light transport is introduced. It represents the union of existing methods that handle individual light modulation effects.

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Title: Jun. Prof. Dr. Oliver Bimber: No Screens Required!
Date: 27 July 2006
Location: 17:30 Uhr, FMI 00.08.038
Abstract: TUM Informatik-Kolloquium
Imageurl: abakus60.jpg
Type: News

Edit | Attach | Refresh | Diffs | More | Revision r1.3 - 27 Jul 2006 - 14:54 - GudrunKlinker

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