用迭代法消除数字图像放大后的模糊  

Deblurring the Enlarged Digital Image by Using the Iteration Method

作　　者：刘维一 于德月[1] 王肇圻[1] 母国光[1] 

机构地区：[1]南开大学现代光学研究所

出　　处：《光电子．激光》2002年第4期398-400,共3页Journal of Optoelectronics·Laser

摘　　要：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。把数字图像插值放大造成的模糊看成是点扩散函数与清晰图像卷积的结果 ,根据插值算法可以得到点扩散函数 ;由于数字图像解卷积是典型的解线性方程组的问题 ,用雅可比 (Jacobi)迭代法得到了很好的结果。与频谱空间变换的方法相比 ,迭代法没有分母为We study the problem of blurring of digital image after interpolation and enlargement by using the iteration method. The blurring can be seen as the result of the convolution of the point spread function and the clear image. We can get the point spread function by the interpolation method. The convolution of digital images is the typical problem of solving linear equation. We get the perfect result by using the Jacobi iteration method. Compared with the method of transformation of spectrum space, there weren't problems of denominator equaling zero and the rounding error in the transformation by using the iteration method.

关 键 词：图像处理 模糊消除 迭代法 数字图像 

分 类 号：TN911.73[电子电信—通信与信息系统]