Interactive Rendering Techniques for Highlighting

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Interactive Rendering Techniques forHighlighting in 3D Geovirtual Environments : 

Interactive Rendering Techniques forHighlighting in 3D Geovirtual Environments Matthias Trapp, Christian Beesk, Sebastian Pasewaldt, Jürgen DöllnerHasso-Plattner-Institut, University of Potsdam, Germany 5th 3D GeoInfo Conference :: 3.-4. November 2010 :: Berlin, Germany

Motivation : 

Motivation Highlighting: Navigation and orientation Express semantic relations Express importance of objects Challenges: Complex 3D data Interactive and scalable Object vs. area highlighting 2

Related Work : 

Related Work Highlighting Techniques to Support Geovisualization, Robinson TR 2006 Semantic Depth-of-Field, Kosara (various) Directing Gaze in 3D Models with Stylized Focus, Cole et al. EGSR 2006 3

Highlighting techniques : 

Highlighting techniques 4

Image-based Rendering Technique : 

Image-based Rendering Technique 5

Manual Masking : 

Manual Masking 6 3D proxy objects to indicate areas to highlight 2D screen aligned lenses

Examples: Simple color overlay : 

Examples: Simple color overlay 7

Examples: Vignetting : 

Examples: Vignetting 8

Examples: Outlines : 

Examples: Outlines 9

Examples: Semantic Depth-of-Field : 

Examples: Semantic Depth-of-Field 10

Examples: Combinations : 

Examples: Combinations 11

Problems & Limitations : 

Problems & Limitations 12

Problems & Limitations : 

Problems & Limitations Occlusion (A, C) Insufficient distance cues (E) Varying camera orientations and projections Perspective foreshortening Color overlay falsifies facade information  “smart” highlighting techniques? 13

Wrap-Up : 

Wrap-Up 14 Real-time rendering techniques Various applications User studies required Potential for future work

Thank you… : 

Thank you… Contact: Matthias Trapp matthias.trapp@hpi.uni-potsdam.de Sebastian Pasewaldt sebastian.pasewaldt@hpi.uni-potsdam.de Computer Graphics Systems Group www.hpi.uni-potsdam.de/3d Researchgroup 3D-Geoinformation www.3dgi.de 15