标题: | 具几何与材质保留之网格化简 Mesh Simplification with Geometry and Material Preserving |
作者: | 廖彦尘 Yen-Chen Liao 庄荣宏 Jung-Hong Chuang 资讯科学与工程研究所 |
关键字: | 多精细度模型;网格化简;误差评量;视觉相似度;level-of-detail modeling;mesh simplification;error metric;visual similarity |
公开日期: | 2004 |
摘要: | 在三维计算机图学的应用软体中需要使用复杂且高精细度之模型,然而在即时描绘的需求之下,为了加速绘制速度通常以低复杂度的模型代替高精细度的。网格化简技术使用区域化简操作去减低模型复杂度,并维持模型的可观度,许多已经被提出的技术测量化简前后的两个网格在三维空间中距离的差距来引导化简的顺序,但确无法考量到模型上的各种属性。在本论文中我们提出一新的网格化简方法,以射线去测量化简前后模型之视觉相似度来引导化简,维持网格之几何与材质呈现在萤幕上的可观性。 Many applications in 3D computer graphics require complex, highly detailed models. Under the requirement real-time rendering, the complex models usually need to be reduced to speed up the rendering process. Techniques of mesh simplification are applied to reduce the geometry complexity by performing local simplification operation sequentially, and maintain its fidelity. Most methods measure 3D distance to guide the simplification, but they don’t consider the attributes, such as color, normal, and texture contents. In this thesis, we propose a new mesh simplification algorithm that preserves the geometric and material appearance of a given mesh. The algorithm uses rays to measure the visual similarity of simplified mesh and original mesh to preserve appearance of texture models. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009117569 http://hdl.handle.net/11536/50079 |
显示于类别: | Thesis |
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