对二维平面上区域进行不规则四边形剖分,构造了区域到子区域的射影变换。由二元分形插值函数引入第三维的值,构成射影迭代函数系统。-Two-dimensional plane of the trapezoidal region subdivision to construct a regional to sub-regional projective transformation. By the binary fractal interpolation function the value of in