求翻译：本次论文的主要内容是：利用MATLAB，综合运用Butterworth和IIR这两种滤波器对一维信号（简单函数）和二维信号（图片）进行快速傅里叶变换与反变换，该设计介绍使用双线性变换法设计IIR巴特沃斯数字滤波器的设计原理、步骤以及在MATLAB平台上的建议仿真实现并且设计低通滤波器对一维信号（函数）和二维信号（数字图像）进行滤波。是什么意思？

The main content of this paper are: the use of Matlab, the integrated use of butterworth and iir the two filters used for fast Fourier transform and inverse transform, the design introduces a one-dimensional signal (simple functions) and two-dimensional signal (image) bilinear transform design iir B

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This paper primary coverage is: Using MATLAB, synthesizes using Butterworth and IIR these two kind of filter (simple function) and the two-dimensional signal (picture) carries on the fast Fournier transformation and the inverse transformation to the unidimensional signal, this design introduction us

This times papers of main content is: using MATLAB, integrated using Butterworth and IIR this two species filter on a dimension signal (simple function) and II dimension signal (pictures) for fast ft leaves transform and anti-transform, the design describes using double linear transform method desig