Dynamic Canvas for Immersive Non-Photorealistic Walkthroughs
Abstract
The static background paper or canvas texture usually used for non-photorealistic animation greatly impedes the sensation of motion and results in a disturbing ``shower door'' effect. We present a method to animate the background canvas for non-photorealistic rendering animations and walkthroughs, which greatly improves the sensation of motion and 3D ``immersion''. The complex motion field induced by the 3D displacement is matched using purely 2D transformations. The motion field of forward translations is approximated using a 2D zoom in the texture, and camera rotation is approximated using 2D translation and rotation. A rolling-ball metaphor is introduced to match the instantaneous 3D motion with a 2D transformation. An infinite zoom in the texture is made possible by using a paper model based on multifrequency solid turbulence. Our results indicate a dramatic improvement over a static background.
Domains
Graphics [cs.GR]
Fichier principal
npr_paper.pdf (5.91 Mo)
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screenshot1.jpg (69.24 Ko)
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infinite_zoom.mov (9.04 Mo)
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infinite_zoom.mpg (3.75 Mo)
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rolling_sphere.mov (14.32 Mo)
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rolling_sphere.mpg (6.53 Mo)
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screenshot2.jpg (39.88 Ko)
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screenshot3.jpg (29.03 Ko)
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spherical_warp.mov (13.56 Mo)
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spherical_warp.mpg (6.14 Mo)
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walkthrough.mov (26.11 Mo)
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walkthrough.mpg (22.07 Mo)
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