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Proceedings Real-Time Pen-and-Ink Illustration of Landscapes

Author(s): Liviu Coconu, Oliver Deussen, Hans-Christian Hege.
Proceedings: NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 27--35, New York, NY, USA, ACM Press, 2006.
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Abstract:
Non-photorealistic rendering has been proven to be particularly efficient in conveying and transmitting selected visual information. Our paper presents a NPR rendering pipeline that supports pen-and-ink illustration for, but not limited to, complex landscape scenes in real time. This encompasses a simplification framework using clustering which enables new approaches to efficient and coherent rendering of stylized silhouettes, hatching and abstract shading. Silhouette stylization is performed in image-space. This avoids explicit computation of connected lines. Further, coherent hatching of the tree foliage is performed using an approximate view-dependent parameterization computed on-the-fly within the same simplification framework. All NPR algorithms are integrated with photorealistic rendering, allowing seamless transition and combination between a variety of photorealistic and non-photorealistic drawing styles.

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