搜索资源列表
程序与图像
- 利用matlab对函数进行傅里叶变换得到相差等(Fourier transform function using MATLAB, such as phase difference)
图像处理
- 图像处理的基本操作,主要以傅里叶变换为例,展示代码细节(The basic operation of image processing, mainly Fourier transform, for example, display code details)
FRFT
- 文件中包含分数阶傅里叶变换的算法及几个用分数阶傅里叶变换处理信号的实例。(The algorithm of fractional Fourier transform in the file and some examples of signal processing with fractional Fourier transform.)
STFT
- MATLAB实现短时傅里叶变换,短时傅里叶逆变换。直接配置好参数就可以用,实用性强。(MATLAB implementation of short time Fourier transform, short time Fourier inverse transform. Direct configuration of parameters can be used, practically.)
ch
- 利用MATLAB计算傅里叶变换并作出频谱图像的代码和图像,涉及FFT算法,看代码可以理解一下~为北京理工大学信号与系统实验实验三的答案(Fourier transform using MATLAB calculation and make spectral image code and images, involving the FFT algorithm, look at the code can understand ~ Beijing Institute of Technology sig
Fourier transform
- 信号处理中简单傅里叶变换的matlab程序(Matlab program of simple Fourier transform in signal processing)
fft
- 对数字图像进行傅里叶变换,查看其频谱图及相位图。(Fourier transform of digital images, to see its spectrum and phase diagram.)
DFT
- visual c++写的傅里叶变换,以及在频域实现低通滤波和高通滤波(Fourier transform written by visual c++ and low-pass filtering and high pass filtering in frequency domain)
信号
- 可以产生一个分段信号,并画出其不同取样点下的傅里叶变换(A piecewise signal can be generated and the Fourier transform under different sampling points is drawn)
DFT
- 傅里叶变换matlab源程序,正傅里叶变换和逆傅里叶变换能够将时域信号转换为频域信号(Fourier transform Matlab source code, the positive Fourier transform and inverse Fourier transform can transform the time domain signal into a frequency domain signal)
MATLAB教学视频:傅里叶变换的频域滤波详解
- MATLAB教学视频:傅里叶变换的频域滤波详解(MATLAB teaching video: Fourier transform filtering in frequency domain)
Lecture2_LFM_RadarSignal_FFT
- 本程序实现了雷达回波的模拟(LFM)及其傅里叶变换,可以让初学者感受雷达回波的处理过程。(This program implements the radar echo simulation (LFM) and its Fourier transform, which allows beginners to feel the process of radar echo)
sfft-code
- 稀疏快速傅里叶变换作为传统FFT的改进版,它充分利用输入信号频域稀疏特性,实现序列的快速傅里叶变换。(As an improved version of the traditional FFT, sparse fast Fourier transform takes full advantage of the sparse characteristics of the input signal frequency domain to achieve fast Fourier transform
stft
- 信号处理中短时傅里叶变换(STFT)的实现,可用于实时系统,实时语音处理或者分段的FFT计算,亲测可用,拿走不谢!(The implementation of short time Fourier transform (STFT) in signal processing can be used for real-time system, real-time speech processing or segmented FFT calculation!)
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 transform is the transformati
fft
- 快速傅里叶变换,高通滤波,低通滤波,可有效进行对不同频段滤波处理,提高数据稳定性。(Fast Fourier transform, high pass filter, low pass filter)
fftcalcshift
- 实现了利用傅里叶变换求两张图像平移距离; 输入是两张具有平移关系的图片; 输出distancex,distancey表示求得的平移距离(The Fourier transform is used to calculate the translation distance of two images. The input is two images with a translation relationship. The output distancex, distancey repres
Radix2FFT原版
- 很多时候都会用到傅里叶变换来处理图像数据。可以通过C++来有效的实现快速傅里叶变换。(to effectively implement the fast Fourier transform by C + +.)
test1
- 将离散的数据或信号,需要进行简单的傅里叶变换进行频谱分析。采用调用fft函数直接进行傅里叶变换。(Fourier transform of data)
FFT (2)
- DSP上实现快速傅里叶变换的算法,仅做参考(An algorithm for realizing fast Fourier transform on DSP)