A Basic Study of a Role of Visualized Informations in a Design System

基于对可视化信息的有效利用将支持设计系统更高效地运行，我们提出了几种技术和策略，使有益的信息能够有效和高效地展示给设计者。首先，我们讨论了从原始数据中提取特征特征的技术，可视化结果之间的比较，被可视化对象的几种基于显示的技术，以及在可视化中显示数值误差的方法。其次，我们提出了一种从流场中提取涡元的方法和利用比较空间对可视化信息进行定量比较的方法，并将PEM(像素曝光法)扩展到极限流线的可视化。此外，还讨论了体绘制方法和粒子跟踪法中的可视化误差，以及误差产生的原因和数值解的一致性。在此基础上，对可视化信息转化为设计信息的策略进行了研究。这些是科学数据的分层可视化、高度精确的可视化和可视化信息的简化。此外，我们还提出了一种利用网格计算实现广域分布数据可视化的策略，以期使用我们的方法和策略更容易地选择更准确、更有效的可视化信息。因此，在设计的每个阶段都可以通过按需请求获得所需的可视化信息。此外，虽然可视化信息的有效利用目前强烈依赖于设计者，但我们提出的方法和策略可能会减少这种依赖。

Based on a consideration that the effective use of visualized information will support more efficient operation of a design system, we propose several techniques and strategies that profitable information will be able to be shown effectively and efficiently to the designers.First, we consider techniques of extracting the characteristic feature from raw data, comparison among visualized results, several display-based techniques for a whole object to be visualized and methods of displaying numerical errors in the visualization. Second, we develop a method of extracting vortex elements from flow fields and a quantitative comparison method for visualized information using the comparison space, and extend the PEM (Pixel Exposure Method) to visualization of limiting streamlines. In additions, visualization errors in the volume rendering method and in the particle tracking method are referred about a cause of the error and the consistency of numerical solution. And then, some strategies that visualized information is transferred into design information using the proposed methods are examined. Those are a hierarchical visualization for scientific data, a highly accurate visualization and a simplification of visualized information. Moreover, we propose a strategy of visualization of distributed data in a wide area using the Grid computing.It is expected that choice of higher accurate and more effective visualized information become easier using our methods and strategies. As a result, necessary visualized information can be obtained by on-demand request in each stage of the design. In additions, although effective utilization of visualized information strongly depends on the designer at present, the dependency may be decreased by our proposed methods and strategies.