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.

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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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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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