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  1. Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering (NPAR '04)
  2. Ryan: rendering your animation nonlinearly projected
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In-situ speech visualization in real-time interactive installation and performance
Interactive rendering of suggestive contours with temporal coherence
IMPaSTo: a realistic, interactive model for paint
Visual interest and NPR: an evaluation and manifesto
Example-based composite sketching of human portraits
Image and video based painterly animation
Stylized rendering of 3D scanned real world environments
Cartoon rendering of smoke animations
Is that a smile?: gaze dependent facial expressions
Rendering complexity in computer-generated pen-and-ink illustrations
Unsupervised colorization of black-and-white cartoons
Hardware-determined feature edges
Rendering cracks in Batik
Image fusion for context enhancement and video surrealism
Ryan: rendering your animation nonlinearly projected

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Ryan: rendering your animation nonlinearly projected

Content Provider ACM Digital Library
Author Coleman, Patrick Singh, Karan
Abstract Artistic rendering is an important research area in Computer Graphics, yet relatively little attention has been paid to the projective properties of computer generated scenes. Motivated by the surreal storyboard of an animation in production---Ryan---this paper describes interactive techniques to control and render scenes using nonlinear projections. The paper makes three contributions. First, we present a novel approach that distorts scene geometry such that when viewed through a standard linear perspective camera, the scene appears nonlinearly projected. Second, we describe a framework for the interactive authoring of nonlinear projections defined as a combination of scene constraints and a number of linear perspective cameras. Finally, we address the impact of nonlinear projection on rendering and explore various illumination effects. These techniques, implemented in Maya and used in the production of the animation Ryan, demonstrate how geometric and rendering effects resulting from nonlinear projections can be seamlessly introduced into current production pipelines.
Starting Page 129
Ending Page 156
Page Count 28
File Format PDF
ISBN 1581138873
DOI 10.1145/987657.987678
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2004-06-07
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Nonlinear perspective Non-photorealistic rendering Local illumination Multiprojection
Content Type Text
Resource Type Article
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