利用峰值线交替扫描法实现曲面消隐

Using interlaced peak value scan line technique to remove hidden-lines from the curve surface

科学可视化将数据和图形图像有机地结合起来,用图形图像直观地展示数据。要生成直观的三维图形,必须进行消隐。对形如z=f(x,y)函数关系的图形,由于网格结点高度z(i,j)的任意性以及规则网格纵横截面的交错性,消隐有时比较困难,需要研究曲面消隐,找出一套有效的消隐算法。在峰值线法(浮动水平线算法)消隐的基础上,提出了一种用于实现形如z=f(x,y)函数关系的图形消隐的峰值线交替扫描法,给出了实施步骤和实例。用该集成消隐方法可方便地实现矩形域上函数z=f(x,y)的数据显示。

Scientific visualization combines the data with graphics to use the graphics and image to show the data intuitively. In order to create intuitionistic three-dimension graphics, the hidden lines must be removed. Regarding the graphics corresponding functions like z=f (x, y), because of the randomicity of the grid node height z (i, j) and the interleaving of the length and breadth sections in the regulation grid, sometimes removal operation is not easy, the removal for the hidden lines from curve surface should be studied to find an effective algorithm used to remove the hidden lines. Based on the peak value scan line technique (Floating horizon algorithm), the interlaced peak value scan line technique used is provided to remove the hidden lines from the function graphics like function z=f (x, y) which gives the implemental process and actual example. It's convenient to use the compositive technique to realize the visualization of the data for function z=f (x, y) within the rectangle field.