标题: | Improved quadratic normal vector interpolation for realistic shading |
作者: | Lee, YC Jen, CW 电子工程学系及电子研究所 Department of Electronics Engineering and Institute of Electronics |
关键字: | shading;quadratic interpolation;perspective correction |
公开日期: | 2001 |
摘要: | Interpolation for normal vectors is an important stage of Phong shading. Linear interpolation cannot represent the geometry of surfaces adequately in some situations. Previous quadratic interpolation for normal vectors generates visual artifacts for arch-type curves and triangle scan conversion. To eliminate those artifacts, we propose an improved quadratic interpolation for normal vectors with little computational overhead. Perspective-correct version for obtaining perspective foreshortening is also presented. |
URI: | http://hdl.handle.net/11536/29970 http://dx.doi.org/10.1007/s003710100111 |
ISSN: | 0178-2789 |
DOI: | 10.1007/s003710100111 |
期刊: | VISUAL COMPUTER |
Volume: | 17 |
Issue: | 6 |
起始页: | 337 |
结束页: | 352 |
显示于类别: | Articles |
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