A visualization of a vector-field by a homogenized nascent-particles tracking
A visualization of a vector-field by a homogenized nascent-particles tracking
复制标题
通过均质新生粒子跟踪实现矢量场的可视化
DOI：
10.1007/bf03182572
复制
发表时间：
2001
影响因子：
1.7
通讯作者：
T. Ohta
中科院分区：
文献类型：
--
作者：
S. Shirayama;T. Ohta
粒子跟踪方法已被开发用于可视化矢量场。该方法能够有效地清晰地显示流场中的大尺度和小尺度结构。然而，粒子的初始位置有时会影响可视化图案。另外，当一个粒子位于另一个粒子上时，显示粒子和识别图案变得困难。在本文中，我们考虑针对这些问题增强粒子跟踪方法。首先，我们尝试减少图案对初始位置的依赖，并考虑如何显示一个粒子占据另一个粒子位置。我们解决方案的本质是由均质化新生粒子和像素/体素空间中的某种操作组成。该解决方案类似于线积分卷积方法（LIC）。其次，讨论了可视化过程的准确性。然后，我们澄清了 LIC 的一些陷阱。最后，描述了一种克服传统粒子跟踪方法和 LIC 缺点的新技术。二维和近表面的几个流场被可视化以演示我们提出的方法。
Particle tracking methods have been developed to visualize a vector-field. The methods are efficient to show a large-scale and a small-scale structure in the flow field clearly. However, initial positions of the particles sometimes affect a visualized pattern. In addition, when a particle lies on another one, it becomes difficult to display the particle and to recognize the pattern. In this paper, we consider an enhancement of particle tracking methods against those problems. First, we attempt to reduce the dependence of pattern on the initial position and consider how to display a particle occupies another particle position. Essence of our solution is composed of homogenizing nascent-particles and a certain manipulation in a pixel/voxel space. This solution is similar to that of line integral convolution method (LIC). Secondly, accuracy of the visualization process is discussed. Then, we make clear some pitfalls of LIC. Finally, a new technique to overcome drawbacks of conventional particle tracking methods and LIC is described. Several flow fields in two-dimensions and near surfaces are visualized for demonstration of our proposed method.