搜索资源列表
frft
- 针对非平稳信号进行进行分数阶傅里叶变换分析(Fractional Fourier transform analysis for non-stationary signals.)
x
- 采用傅里叶变换，实现噪声图像的修复，主要内容是通过傅里叶变换构建高通滤波，使用matlab 编程 实现(The main content is to construct high pass filter by Fourier transform and implement it with Matlab programming)
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- 计算多组信号的卷积，并画图，采用傅里叶变换分析信号的幅度谱和角度谱，采用matlab 编写(The convolution of multiple sets of signals was calculated and plotted. The amplitude and angle spectra of the signals were analyzed by Fourier transform. Matlab was used to write the graph.)
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- 通过对读入的一段语音信息进行处理，提取信号频率，并进行傅里叶变换提取信号的频率(The frequency of the signal is extracted and the frequency of the signal is extracted by processing a speech message read in)
STFT
- 短时傅里叶变换实现线性调频信号的时频分析(Time-frequency analysis of LFM signal by short time Fourier transform)
fft
- 采集的原始信号时域显示和使用傅里叶变换进行频谱分析(The time domain display of the original signal and Fourier transform to analyze the spectrum)
st
- 地震波短时傅里叶变换，时频分析是地震波信号处理的重要部分(Short time Fourier transform of seismic waves)
现代信号处理
- 这里面是对傅里叶变换的讲解和应用，比较细节的讲述了傅里叶变换，还有一定的讲解，有利于傅里叶初学者。(This is the explanation and application of Fu Liye transformation, the details of the descr iption of the Fu Liye transformation, and a certain explanation, conducive to Fu Liye beginners.)
OAMlight2
- 该代码用于处理光经过透镜做的傅里叶变换，利用对数极坐标的方法来分离涡旋光(The code is used to deal with the Fourier transform of light through the lens, and the method of logarithmic polar coordinates is used to separate the vortex optical rotation.)
Simple image and its Fourier transform
- 简单图像及其傅里叶变换,可对图像进行简单的处理，本例为简单图形进行傅里叶变换的基础实例(Simple image and its Fourier transform)
fft
- 图像傅里叶变换与逆变换，用c语言实现，基于opencv(Image Fu Liye transform and inverse transformation, C implementation)
fft
- 基于MATLAB的快速傅里叶变换的程序仿真 附课件(Program simulation of fast Fourier transform based on MATLAB)
FFT
- 对快速傅里叶变换进行简单举例，在实际时域转频域时如何操作(A simple example of fast Fourier transform)
小波分析仿真程序
- 小波分析课程部分仿真程序，涉及加窗傅里叶变换、信号分解重构等，每步都有有详细注释(A part of the simulation program for the course of wavelet analysis.Relates to the windowed Fourier transform, signal decomposition and reconstruction, every step has a detailed notes .)
zxc201409120217
- 可以通过程序实现对图片进行噪声处理，通过傅里叶变换，实现对各种噪声的处理。(All kinds of noise processing of pictures can be realized by program.)
textRotCorrect-master
- 通过opencv结合傅里叶变换，检测文字的倾斜角，并矫正倾斜文字(opencvandFourier,textRotCorrect)
sinc_gause
- 简单函数的傅里叶变换，包括sinc、高斯函数和带有二次相位的高斯函数的傅里叶变换(Fourier transform of simple function)
加窗傅里叶变换相位提取
- 对一个有限长的时域采样信号进行傅里叶变换实际上就是加了一个矩形窗，相当于用矩形窗把无限长的数据截断了，也可以根据需要把这个矩形窗换成其他窗函数，在空域上加窗。
threefilterCompare
- 将图像傅里叶变换，然后利用高斯、巴特沃斯、理想滤波器实现图像高频成份和低频成份的分离。(The image Fu Liye transform is applied, then the Gauss high pass lowpass filter is used to achieve the separation of high-frequency components and low frequency components.)
快速傅里叶变换 c
- FFT的基本思想是把原始的N点序列，依次分解成一系列的短序列。充分利用DFT计算式中指数因子 所具有的对称性质和周期性质，进而求出这些短序列相应的DFT并进行适当组合，达到删除重复计算，减少乘法运算和简化结构的目的(Fast Fourier Transform)