Rendering optimisations for stylised sketching
Contribuinte(s) |
[Unknown] |
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Data(s) |
01/01/2003
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Resumo |
We present work that specifically pertains to the rendering stage of stylised, non-photorealistic sketching. While a substantial body of work has been published on geometric optimisations, surface topologies, space-algorithms and natural media simulation, rendering-specific issues are rarely discussed in-depth even though they are often acknowledged. We investigate the most common stylised sketching approaches and identify possible rendering optimisations. In particular, we define uncertainty-functions, which are used to describe a human-error component, discuss how these pertain to geometric perturbation and textured silhouette sketching and explain how they can be cached to improve performance. Temporal coherence, which poses a problem for textured silhouette sketching, is addressed by means of an easily computed visibility-function. Lastly, we produce an effective yet surprisingly simple solution to seamless hatching, which commonly presents a large computational overhead, by using 3-D textures in a novel fashion. All our optimisations are cost-effective, easy to implement and work in conjunction with most existing algorithms.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
ACM |
Relação |
http://dro.deakin.edu.au/eserv/DU:30039179/bangay-renderingoptimisations-2003.pdf http://dx.doi.org/10.1145/602330.602353 |
Palavras-Chave | #3D texturing #coal #pencil #chalk #hatching #rendering #edge-fading #non-photorealistic rendering #temporal coherence #uncertainty-functions |
Tipo |
Conference Paper |