Non-Photorealistic Computer Graphics Library

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Found 11 item(s) authored by "Marc Nienhaus" .
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Proceedings Blueprints: illustrating architecture and technical parts using hardware-accelerated non-photorealistic rendering
Marc Nienhaus, Jürgen Döllner.
Graphics Interface (GI'04), pp. 49--56, Canadian Human-Computer Communications Society, 2004. [BibTeX]

Article Depicting Dynamics Using Principles of Visual Art and Narrations
Marc Nienhaus, Jürgen Döllner.
IEEE Computer Graphics and Applications, Vol. 25, No. 3, pp. 40--51, May/June, 2005. [BibTeX]

Proceedings Dynamic Glyphs - Depicting Dynamics in Images of 3D Scenes
Marc Nienhaus, Jürgen Döllner.
Proceedings of Third International Symposium on Smart Graphics, pp. 102--111, July, 2003. [BibTeX]

Proceedings Edge-Enhancement – An Algorithm for Real-Time Non-Photorealistic Rendering
Marc Nienhaus, Jürgen Döllner.
11th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG), 2003. [BibTeX]

In Book GPU Gems II: Programming Techniques for High Performance Graphics and General-Purpose Computation
Marc Nienhaus, Jürgen Döllner.
M. Pharr, Blueprint Rendering and Sketchy Drawings, pp. 235--252, Addison-Wesley Professional, 2005. [BibTeX]

Proceedings Illustrating Design and Spatial Assembly of Interactive CSG

Author(s): Marc Nienhaus, Florian Kirsch, Jürgen Döllner.
Proceedings: Proceedings of 4th International Conference on Computer Graphics, Virtual Reality, Visualisation and Interaction in Africa (ACM AFRIGRAPH 2006), pp. 91--98, Cape Town, South Africa, January 25 - 27, 2006.
[BibTeX] [DOI] Find this paper on Google

For the interactive construction of CSG models understanding the layout of the models is essential to ease their efficient manipulation. To comprehend position and orientation of the aggregated components of a CSG model, we need to realize its visible and occluded parts as a whole. Hence, transparency and enhanced outlines are key techniques to communicate deeper insights.We present a novel real-time non-photorealistic rendering technique that illustrates design and spatial assembly of CSG models.As enabling technology we first present a solution for combining depth peeling with image-based CSG rendering. The rendering technique can then extract layers of ordered depth from the CSG model up to its entire depth complexity. Capturing the surface colors of each layer and combining the results thereafter synthesizes order-independent transparency as one major illustration technique for interactive CSG.We further define perceptually important edges of CSG models and integrate an image-space edge-enhancement technique that can detect them in each layer. In order to outline the model's layout, the rendering technique extracts perceptually important edges that are directly visible, i.e., edges that lie on the model's outer surface, or edges that are occluded, i.e., edges that are hidden by its interior composition. Finally, we combine these edges with the order-independent transparent depictions to generate edge-enhanced illustrations, which provide a clear insight into the CSG models, let realize their complex, spatial assembly, and, thus, simplify their interactive construction.

Proceedings Illustrative Visualization of 3D City Models
Jürgen Döllner, Henrik Buchholz, Marc Nienhaus, Florian Kirsch.
Proceedings of SPIE - Visualization and Data Analysis (VDA 2005), San Jose, CA, USA, 2005. [BibTeX]

PhD Thesis Real-Time Non-Photorealistic Rendering Techniques for Illustrating 3D Scenes and their Dynamics
Marc Nienhaus.
University of Potsdam, Germany, June, 2005. [BibTeX]

Proceedings Sketchy Drawings
Marc Nienhaus, Jürgen Döllner.
AFRIGRAPH '04: Proceedings of the 3rd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa, pp. 73--81, Stellenbosch, South Africa, ACM Press, 2004. [BibTeX]

Proceedings Sketchy drawings: a hardware-accelerated approach for real-time non-photorealistic rendering
Marc Nienhaus, Jürgen Döllner.
SIGGRAPH 2003 conference on Sketches & applications, 2003. [BibTeX]

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