- Title
- Rendering optimisations for stylised sketching
- Creator
- Winnemöller, Holger, Bangay, Shaun D
- Subject
- To be catalogued
- Date
- 2003
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/432922
- Identifier
- vital:72913
- Identifier
- https://doi.org/10.1145/602330.602353
- Description
- 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.
- Format
- 7 pages, pdf
- Language
- English
- Relation
- Proceedings of the 2nd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa, Winnemöller, H. and Bangay, S., 2003, February. Rendering optimisations for stylised sketching. In Proceedings of the 2nd international conference on Computer graphics, virtual Reality, visualisation and interaction in Africa (pp. 117-122), Proceedings of the 2nd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa volume 2003 number 1 117 122 2003 978-1-58113-643-2
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the ACM Digital Library Statement (https://libraries.acm.org/digital-library/policies#anchor3)
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Collections
Bangay, Shaun Douglas (Dr)
RU Department of Computer Science
SDG 09. Industry, Innovation and Infrastructure
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Rendering optimisations for stylised sketching.pdf | 674 KB | Adobe Acrobat PDF | View Details Download |