NPR Lenses: Interactive Tools for Non-Photorealistic Line Drawings
NPR Lenses is an interactive technique for producing expressive non-photorealistic renderings. It provides an intuitive visual interaction tool for illustrators, allowing them to seamlessly apply a large variety of emphasis techniques. Advantages of 3D scene manipulation are combined with the capabilities of viewer-aligned lenses by inserting 2D lens controls into the 3D rendering pipeline. By using lenses that are spatially explicit and constrained we enable object-independent adjustments in 3D. Regions of emphasis can be easily created by adjusting lens parameters and any combination of line style, type, shape, and position of computer-generated lines. NPR Lenses support the creation of effects similar to those found in many existing hand-drawn illustrations and allow creative freedom through interactive control at the same time.
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Poster (presented at NPAR 2006):
|Petra Neumann, Tobias Isenberg, and Sheelagh Carpendale (2006) NPR Lenses: Local Effect Control for Non-Photorealistic Line Drawings. In Doug DeCarlo and Lee Markosian, eds., Poster Presentations of the Fourth International Symposium on Non-Photorealistic Animation and Rendering (NPAR, June 5–7, Annecy, France). 2006. Extended abstract and poster, also see the paper at Smart Graphics 2007 and the technical report.|
|Petra Neumann, Tobias Isenberg, M. Sheelagh T. Carpendale, and Thomas Strothotte (2005) Expressive Distortion of Strokes and 3D Meshes. Technical report 2005-776-07, Department of Computer Science, University of Calgary, March 2005. Also see the paper at Smart Graphics 2007 and the poster at NPAR 2006.|