用迭代法对数字图像经过插值放大后产生的模糊问题进行了研究。
We study the problem of blurring of digital images after interpolation and enlargement by using the iteration method.
针对牛顿迭代法收敛精度和速度受初值影响的问题，基于数据插值和拟合方法，研究了迭代初值生成技术。
Meanwhile, considering that Newton iterative method is sensitive to the initial value of parameters, the paper studied generated methods for initial values on basis of data interpolation and fitting.
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