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azq
- 从信号处理的角度,通过对一维信号的离散傅里叶变换频谱图特性进行研究,进而推广到二维,daolr-signal processing from the point of view of one-dimensional signals in the discrete Fourier transform spectrum characteristics, thus the promotion of two-dimensional, and d
bianhuanyu
- 8/24位图像的变换域处理及应用。内有正交变换、一维二维傅里叶变换、二维离散余弦、频域高通、低通滤波等。-8/24 images transform domain processing and application. There orthogonal transformation, a two-dimensional Fourier transform two-dimensional discrete cosine, frequenc
cxrFFT
- 实现一维快速傅里叶变换,采用蝶形算法进行频域变换; 二维快速傅立叶变换在此基础上进行,调用两次一维快速傅里叶变换即可。-achieve a fast Fourier transform, using butterfly frequency domain algorithm transformation; two-dimensional fast Fourier transform on this basis, call a two-
Transform
- 图像正交变换的实现,包括一维离散傅里叶变换,二维离散傅里叶变换,离散余弦变换-Orthogonal transformation of the realization of images, including one-dimensional discrete Fourier transform, two-dimensional Discrete Fourier Transform, Discrete Cosine Transform
1_D_FFT
- fortran语言编写的一维离散快速傅里叶变换。-fortran language of one-dimensional discrete fast Fourier transform.
fftc
- 用c程序实现一维傅里叶变换,基于时间复杂度为2的一维傅里叶变换,必须输入数据,才能看到结果。-C procedures used to achieve one-dimensional Fourier transform, based on the time complexity is one of the 2-dimensional Fourier transform, we must input data in order to se
FFT-C
- 一维傅里叶变换及其逆变换,快速算法,用于图像处理等领域-one dimensional fast fourier transform and inverse fast fourier transform
onefrft
- 一维分数福利叶变换的程序及其调用程序,可以应用于二维变换,实现图像的分数傅里叶变换。-Scores of well-being of one-dimensional Fourier transform of the procedures and called procedures, can be applied to two-dimensional transformation, to achieve the image of the
therefft
- 改程序是建立在一维FFT的基础上编写的,改进的程序可以实现三维的快速傅里叶变换-3D-FFT
restore
- 图像增强的目标是改进图片的质量,例如增加对比度,去掉模糊和噪声,修正几何畸变等;图像复原是在假定已知模糊或噪声的模型时,试图估计原图像的一种技术。 图像增强按所用方法可分成频率域法和空间域法。前者把图像看成一种二维信号,对其进行基于二维傅里叶变换的信号增强。采用低通滤波(即只让低频信号通过)法,可去掉图中的噪声;采用高通滤波法,则可增强边缘等高频信号,使模糊的图片变得清晰。具有代表性的空间域算法有局部求平均值法和中值滤波(取局部邻
matlabFourertransform
- MATLAB实现图像的傅里叶变换,包括一维傅里叶变换,二维傅里叶变换-MATLAB Fourier transform of image, including the one-dimensional Fourier transform, two-dimensional Fourier transform
FT
- 基于vb的一维傅里叶变换 程序(含代码和可执行文件)。-Vb-based one-dimensional Fourier transform program (including code and executable files).
FFT
- 本程序实验室快速傅里叶变换的一维,二维,及其逆变换-This procedure laboratory one-dimensional fast Fourier transform, two-dimensional, and its inverse transform
Fractional-Fourier-transform
- 分数阶傅里叶变换,一维的分数阶傅里叶变换matlab程序-Fractional Fourier transform
fft
- 进行傅里叶变换的java代码,其中有三个java文件,Signal中Signal类存放了信号,FFT1D进行一维傅里叶变换,ToolboxFourier进行了三维傅里叶变换。图像处理的可以看下。-Fourier transform of the java code, which has three java files, Signal Signal class stored in the signal, FFT1D for one-di
hua_fft
- 可以对振动信号进行傅里叶变换,得到幅值谱或功率谱。(Fourier transform of the vibration signal can be used to obtain amplitude spectrum or power spectrum.)
新建 Microsoft Word 文档
- opencv实现傅里叶变换,傅立叶变换是把图像从空间域转化到频率域的变换。空间域:一般的情况下,空间域的图像是f(x,y)=灰度级(0-255),形象一点就是一个二维矩阵,每个坐标对应一个颜色值。频率域:频率:对于图像来说可以指图像颜色值的梯度,即灰度级的变化速度,幅度:可以简单的理解为是频率的权,即该频率所占的比例:能量=幅度(可能不太准确),变换结果为F(u,v),F代表幅度值,u代表x方向的频率,v代表y方向的频率(Fu Liye
一维快速傅里叶转换
- 泊松方程的解法,这是一个一维泊松方程,利用快速傅里叶变换方法解(The solution of Poisson equation, which is a one-dimensional Poisson equation, is solved by the fast Fourier transform method)
matlab傅里叶变化性质验证
- 二维傅立叶变换的Matlab实现,是利用图像处理软件对给 出的图像进行傅立叶变换处理。 自行设计一幅图像,验证离散傅立叶变换的性质,如: 频谱图中高频分量迅速衰减,可分离性,平移,周期性与共 轭对称性,旋转、线性和比例性,平均值。(The Matlab implementation of two-dimensional Fu Liye transform is based on image processing software
yiweifuliye
- 一维离散傅里叶变换,通过调用excel文件来进行离散傅里叶变换(One dimensional discrete Fourier transform, by calling the excel file to do the discrete Fourier transform)