电磁场的科学计算可视化

The Visualization of Scientific Calculations in Electromagnetic Fields

基于面向对象方法，建立了一个电磁场可视化实验系统。文中根据电磁场数据及可视化要求，采用对象表示可视化过程，建立电磁场可视化流水线模型；基于ＣＩＥ－Ｌｕｖ均匀颜色系统，生成线性灰度表用于颜色映射；同时在Ｓａｂｅｌｌａ的ＤＥ光照模型的基础上，给出了统一的电磁场可视化绘制模型。

We analyzed different types of data sets and gave their complete mathematical expressions. Our object -oriented rendering model unified surface model,cross -section model,and transparency model into one model that could satisfy their different requirements for visualizing electromagnetic fields.We established an object -oriented visualization pipeline which not only retained naturalism and distribution properties of an ordinary visualization pipeline but also possessed the advantages of abstraction,encapsulation,inheritance and polymorphism.In addition,the authors developed on a uniform color space(CIE -Luv) a linear gray scale (LinGray)which could be used in color mapping in the electromagnetic field visualization.The method makes it possible to display not only the internal information of the field but also the ever changing information of electromagnetic field on pre -assigned surfaces or profiles.