Simon Fraser University, Burnaby, Canada.
IEEE Trans Vis Comput Graph. 2010 Nov-Dec;16(6):1468-76. doi: 10.1109/TVCG.2010.190.
Graphics artists commonly employ physically-based simulation for the generation of effects such as smoke, explosions, and similar phenomena. The task of finding the correct parameters for a desired result, however, is difficult and time-consuming as current tools provide little to no guidance. In this paper, we present a new approach for the visual exploration of such parameter spaces. Given a three-dimensional scene description, we utilize sampling and spatio-temporal clustering techniques to generate a concise overview of the achievable variations and their temporal evolution. Our visualization system then allows the user to explore the simulation space in a goal-oriented manner. Animation sequences with a set of desired characteristics can be composed using a novel search-by-example approach and interactive direct volume rendering is employed to provide instant visual feedback. A user study was performed to evaluate the applicability of our system in production use.
图形艺术家通常使用基于物理的模拟来生成效果，如烟、爆炸和类似的现象。然而，由于当前的工具几乎没有提供任何指导，因此找到所需结果的正确参数是困难且耗时的。在本文中，我们提出了一种新的方法来可视化探索此类参数空间。给定一个三维场景描述，我们利用采样和时空聚类技术生成一个简洁的概述，展示可实现的变化及其时间演化。然后，我们的可视化系统允许用户以目标为导向的方式探索模拟空间。可以使用一种新的基于示例的搜索方法来组合具有一组所需特征的动画序列，并使用交互式直接体绘制提供即时视觉反馈。进行了一项用户研究，以评估我们的系统在生产中的适用性。
