Simplifying Character Skins with Analytic Error Metrics
| dc.contributor.author | Merry, B. | en_US |
| dc.contributor.author | Marais, P. | en_US |
| dc.contributor.author | Gain, J. | en_US |
| dc.date.accessioned | 2015-02-23T09:36:15Z | |
| dc.date.available | 2015-02-23T09:36:15Z | |
| dc.date.issued | 2010 | en_US |
| dc.description.abstract | Traditionally, levels of detail (LOD) for animated characters are computed from a single pose. Later techniques refined this approach by considering a set of sample poses and evaluating a more representative error metric. A recent approach to the character animation problem, animation space, (AS) provides a framework for measuring error analytically. The work presented here uses the animation-space framework to derive two new techniques to improve the quality of LOD approximations.First, we use an animation-space distance metric within a progressive mesh-based LOD scheme, giving results that are reasonable across a range of poses, without requiring that the pose space be sampled.Second, we simplify individual vertices by reducing the number of bones that influence them, using a constrained least-squares optimization. This influence simplification is combined with the progressive mesh to form a single stream of simplifications. Influence simplification reduces the geometric error by up to an order of magnitude, and allows models to be simplified further than is possible with only a progressive mesh.Quantitative (geometric error metrics) and qualititative (user perceptual) experiments confirm that these new extensions provide significant improvements in quality over traditional, naive simplification; and while there is naturally some impact on the speed of the off-line simplification process, it is not prohibitive. | en_US |
| dc.description.number | 1 | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.description.volume | 29 | en_US |
| dc.identifier.doi | 10.1111/j.1467-8659.2009.01543.x | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.pages | 13-24 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/j.1467-8659.2009.01543.x | en_US |
| dc.publisher | The Eurographics Association and Blackwell Publishing Ltd | en_US |
| dc.title | Simplifying Character Skins with Analytic Error Metrics | en_US |