IIS (G&V) EAGER: Modeling and Rendering a Fibre Bundle

IIS（G

• 批准号: 1048873
• 负责人: Robert Lewis
• 金额: $ 7.49万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1048873&HistoricalAwards=false
• 关键词: IIS; G& EAGER; Modeling; Rendering

AbstractConsiderable work in computer graphics has gone into the realistic modeling and rendering of flames. Modeling and rendering the underlying wood combustion process has received some attention recently, but prior work has not incorporated effects of internal wood properties such as density variation (i.e. ?grain?) and pre-combustion processes such as drying. A concept called ?fiber bundles? is proposed that can realistically represent the structure of fibrous materials such as wood. Fiber bundles consist of an arbitrarily large number of almost-parallel, never-intersecting curves. Model properties at any point in space depend on (a) the curve that comes closest to that point and (b) the distance to that curve. Space is partitioned by the Voronoi volume of these curves. This is a new concept in graphical modeling and, if viable, would be transformative in the representation of both natural and synthetic fibrous materials, allowing for physically correct simulation. Significant issues arise in computing these fiber bundles and this research is designed to show that mathematical algorithms for processing fiber bundles can be developed and implemented in ways that are computationally viable in terms of both time and space efficiency.If successful, the research can lead to improved new representation of fibrous materials. This will be applicable not only for wood combustion, but also wherever plants, plant materials, or synthetic fibers are modeled. The impact goes beyond the entertainment industry. It would, for example, provide essential predictive capabilities to design systems for fire engineering as well as for disaster planning and management.

火焰的真实感建模和绘制是计算机图形学中的一项重要工作。建模和渲染的基本木材燃烧过程已经受到了一些关注最近，但以前的工作还没有纳入木材内部属性，如密度变化（即？谷物？）和预燃烧过程如干燥。一个概念叫？纤维束提出了一种能够真实地表示诸如木材的纤维材料的结构的方法。纤维束由任意多条几乎平行、永不相交的曲线组成。空间中任意点的模型属性取决于（a）最接近该点的曲线和（B）到该曲线的距离。空间由这些曲线的Voronoi体积划分。这是图形建模中的一个新概念，如果可行，将在天然和合成纤维材料的表示中具有变革性，从而允许物理上正确的模拟。在计算这些纤维束和本研究的目的是表明，处理纤维束的数学算法可以开发和实施的方式，是计算上可行的时间和空间效率，如果成功的话，研究可以导致改进的纤维材料的新表示。这将不仅适用于木材燃烧，而且适用于植物，植物材料或合成纤维建模的任何地方。其影响超出了娱乐业。例如，它将为消防工程以及灾害规划和管理系统的设计提供基本的预测能力。