基于梯度自适应的体绘制透明度传递函数生成应用  

Application of Generating Gradient Adaptive Transparency Transfer Function in Volume Rendering

作　　者：刘福发 刘建波[1] LIUFu-fa;LIU Jian-bo(China Academy Of Engineering Physics,Institute of Computer Application,Mianyang,621000)

机构地区：[1]中国工程物理研究院计算机应用研究所,四川绵阳621000

出　　处：《电脑与信息技术》2020年第3期1-3,12,共4页Computer and Information Technology

摘　　要：针对体绘制方法中的透明度传递函数设计这一环节,利用数据的梯度分布信息,来自动生成透明度传递函数,可以显著减少了可视化过程中的人工参与,提升可视化流程的效率。同时利用梯度的频度优化了传递函数的绘制效果,使得该方法对于梯度值域跨度较大的数据也具备良好的适配性。文章最后将该方法应用于大气冲击波和CT成像数据可视化,并与传统传递函数进行对比,验证了绘制效果。For the design of the transparency transfer function in volume rendering,using the gradient distribution information to generate the transparency transfer function,can significantly reduce the manual participation in the visualization process,and improve the efficiency of the visualization process.The frequency of the gradient is also used to optimize the rendering effect,so that this method has good adaptability to the data with a large gradient range.Finally,this method is applied in the visualization of atmospheric shock waves and CT imaging data,and compared with the traditional transfer function to verify its rendering effect.

关 键 词：科学计算可视化 体绘制 传递函数 梯度 

分 类 号：TP391.411[自动化与计算机技术—计算机应用技术]