获取自然景物IFS码的交互式系统环境建立

摘要

引进迭代函数系统模拟绘制自然景物.通过建立计算机交互式环境,把一个图形分为若干子图,每个子图看作是原图在不同仿射变换下的复制品,交互式确定并拾取原图与子图之间相应的特征点,求解线性方程组,获得IFS码,利用随机迭代算法绘制景物图形.在交互式确定对应点时,可提供选择多于3对点的能力,求解多个线性方程组,得到若干仿射变换系数,并确定最佳的组合.实验证明,交互式获取IFS码的方法,使构造的图形更加接近真实景物.%In the paper,the natural scenery is simulated based on Iteration Function System.Through setting computer mutual system,taking one graphics into parts,every part is seen as duplication of former graph based on different affine maps.Mutually confirming and picking up corresponding point between former graphics and sub-graphics are used to explain equation and obtain a group IFS code,and then iteration algorithm is used to protract scenery graphics.During mutually confirming corresponding point,the system will choose automatically many points to explain equations,abtain several affine map codes and confirm the best combination,and then make the graphics close to truelly senery.