Computer graphics is important in developing fractal images visualizin
g the Mandelbrot and Julia sets from a complex function, Computer rend
ering is a central tool for obtaining nice fractal images, We render 3
D objects with the height of each complex point of a fractal image con
sidering the diverging speed of its orbit. A potential function helps
approximate this speed, We propose a new method for estimating the nor
mal vector at the surface points given by a potential function. We con
sider two families of functions that exhibit interesting fractal image
s in a bounded region: a power function, f(alpha,c)(z) = z(alpha) + c,
where alpha is a real number, and the Newton form of an equation, exp
(- alpha zeta + z/zeta - z) - 1 = 0 where \zeta\ = 1 and alpha > 0.