摘要
体绘制中传递函数的设计相当重要,文章研究了几种常见传递函数的设计思路,并提出基于三维梯度幅值的传递函数设计算法,该算法综合考虑采样点灰度值与三维梯度幅值的一维传递函数,引入权值数组对采样点的灰度值与三维梯度幅值进行加权,并与Kindlmann提出的半自动传递函数生成算法进行体绘制对比实验,实验表明在绘制的效率和精度上有所改善。
The design of transfer function in volume rendering is very important. In this paper, we study the design ideas of several common transfer functions and propose a transfer function design algorithm based on three-dimensional gradient amplitude. The algorithm takes into account both the gray value of sampling points and the three-dimensional gradient amplitude One-dimensional transfer function is introduced to weight the grayscale value and the three-dimensional gradient amplitude of the sample point by using the array of weights. Compared with the algorithm of Kindlmann’s semi-automatic transfer function generation algorithm, the experimental results show that in the efficiency and precision of the drawing Improved.
作者
罗明
施云飞
Luo Ming;Shi Yunfei(The china Three Gorges University computer and information institute;Intelligent visual monitoring key laboratory of hydropower project,Hubei YiChang 443002)
出处
《信息通信》
2018年第3期11-12,共2页
Information & Communications
关键词
体绘制
三维梯度
传递函数
Volume rendering
Three-dimensional gradient
Transfer Function
