摘要
Power图是一种特殊的加权Voronoi图 ,该图中每个生成元点 pi 都带有权值wi 给出了一种直接构造Power图的算法 以每个生成元点 pi 为圆心 ,Power距离wi为半径画圆 ;然后将这些圆以不同颜色填充 ,并以相同速率向外扩展这些圆的边界 ,直到屏幕上所有像素点都涂上颜色为止 ,环绕 pi 的新边界构成Power图 该算法改进了在Voronoi图基础上构造Power图的传统方法 。
Power diagram generalized the Voronoi diagram by assigning weight w i to each given point p i. A straight forward way of constructing Power diagram is presented. Using the Power distance w i as radius, construct circles with each p i as center. Filling all these circles with different colored pixels and propagating the boundary of all circles at the same speed until no blank space is left. The new boundaries surrounding p i present the required Power diagram. Such an approach is more efficient than the traditional way of first generating Voronoi diagram and then converting it to Power diagram.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2003年第9期1181-1184,共4页
Journal of Computer-Aided Design & Computer Graphics
