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Description: 用于信号处理的分数阶傅立叶变换matlab源代码。希望对各位有用-For signal processing fractional Fourier transform matlab source code. Members wish to be useful
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Size: 6144 |
Author: 杨洋 |
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Description: fft的文件，fortran环境下运行！欢迎指正！-fft documents, fortran environment running! Please correct me!
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Size: 1024 |
Author: 万兰 |
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Description: 从网上下载的一个和matlab实现快速傅立叶变换相关的程序，希望能够给大家一点帮助-Downloaded from the Internet and matlab realize a Fast Fourier Transform related procedures, hoping to give us some help
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Size: 1024 |
Author: 六月的雨 |
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Description: 图象处理，二维FFT，滤波。VC++6.0开发环境。-Image processing, two-dimensional FFT, filtering. VC++ 6.0 development environment.
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Size: 2683904 |
Author: 匡匡 |
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Description: 超声医学图像去噪代码，用TV法实现偏微分方程去除斑点噪声-Ultrasonic medical image denoising code, with TV method to achieve partial differential equations to remove speckle noise
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Size: 144384 |
Author: 曦禾 |
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Description: 改写的fft基２的算法，压缩包中含有data数据，程序中直接调用。-Rewrite the fft radix-2 algorithm, compressed packet data contains data, the procedure call directly.
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Size: 2048 |
Author: 李淡 |
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Description: 2维fft程序，包括fortran和c语言-2-D fft procedures, including the fortran and c language
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Size: 61440 |
Author: muyou |
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Description: 关于半色调编码计算全息图的信息隐藏Matlab程序的说明：
算法实现主程序为CGHwatermark；
位相恢复函数为phaseSL；
用计算全息记录已知振幅和位相的复波前函数为Hologen；
半色调编码函数为AMhalftone；
嵌入信息的提取直接调用Matlab自带的FFT2函数；
主程序的函数调用关系如下
读入宿主信息和水印信息-----------phaseSL--->Hologen--->AMhalftone(完成嵌入)--->FFT2（提取水印信息）
主程序结果保存于holo&mark文件夹
对算法鲁棒性测试的程序：
1. 对于剪切操作 Cliptest 结果存放于cliptest文件夹
2. 对于缩放操作 zoomtest 结果存放于zoomtest文件夹
3. 对于旋转操作 rotatetest 结果存放于rotate文件夹
4. 对于滤波操作 filtertest 结果存放于filtertest文件夹
5. 测试算法的时间效率 timetest
6. 分析嵌入信息后图像质量与参数alpha，tao的关系 msetest-err
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Size: 1505280 |
Author: violetlvsoso |
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Description: 计算全息close all clc clear
A=zeros(64)
A(15:20,20:40)=1 A(15:50,20:25)=1
A(45:50,20:40)=1 A(30:34,20:35)=1
％ ppp=exp(rand(64)*pi*2*i) A=A.*ppp
％ Author s email: zjliu2001@163.com
figure imshow(abs(A),[])
Fa=fft2(fftshift(A)) Fs=fftshift(Fa)
Am=abs(Fs) ％ amplitude
Ph=angle(Fs) ％ phase
s=11 ％ 这表示边长吗？
cgh=zeros(64*s)
th=max(max(abs(Fs)))
-CGH close all clc clearA = zeros (64) A (15:20,20:40) = 1 A (15:50,20:25) = 1 A (45:50,20:40) = 1 A (30 : 34,20:35) = 1 ppp = exp (rand (64)* pi* 2* i) A = A.* ppp Author s email: zjliu2001@163.comfigure imshow (abs (A), [] ) Fa = fft2 (fftshift (A)) Fs = fftshift (Fa) Am = abs (Fs) amplitudePh = angle (Fs) phases = 11 This means that the length was it? cgh = zeros (64* s) th = max (max (abs (Fs)))
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Size: 3072 |
Author: ccfu |
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Description: 通过UDP传送文件，经测试，在教育网内两个高校间传输能达到ftp速度的10~100倍，其主要工作机制是使用TCP使传输控制，UDP做数据传送。能加速的基本原因为，TCP的拥塞控制算法减慢了其传输速度，而用UDP自定义的传送协议则没有这个限制。-Transmission of documents through the UDP, tested, in the education network between the two colleges and universities can achieve ftp transmission speed 10 ~ 100 times, with the main mechanism is to make use of TCP Transmission Control, UDP to do data transfer. Can accelerate the basic reasons for, TCP congestion control algorithm down its transmission speed, and with custom UDP transfer protocol is not the limit.
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Size: 7664640 |
Author: 小树林 |
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Description:
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Size: 829440 |
Author: 洪康 |
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Description: 进行快速傅立叶变换，是一个改进的算法，较好。-Fast Fourier transform, an improved algorithm is better.
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Size: 1024 |
Author: 徐伟业 |
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Description: matlab实例clearN=100f=zeros(50,50) f(15:35,23:28)=1 figure(1)imshow(f, notruesize )F=fft2(f,N,N) F2=fftshift(abs(F)) figure(2)x=1:N y=1:N mesh(x,y,F2(x,y)) colormap(gray) colorbar-matlab
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Size: 4096 |
Author: 孙强 |
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Description: 本片文章语言为英文，matlab中关于fft2的频谱分析。-How To Use FFT2
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Size: 109568 |
Author: lllitwei |
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Description: How to apply the 2D FFT functions in Matlab
如何使用MATLAB中的FFT2对图像进行二维的FFT处理详细教程-How to apply the 2D FFT functions in Matlab
如何使用MATLAB中的FFT2对图像进行二维的FFT处理详细教程
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Size: 7168 |
Author: xuyutong |
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Description: 用C语言实现傅里叶变换，可在CCs上运行，编译通过，观察傅里叶变换的波形图。-Fourier transform using C language, can be run on CCs, compile, Fourier transform waveform observation.
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Size: 1024 |
Author: 黄淑荣 |
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Description: 自己编的程序，实现快速傅里叶变化，结果和matlab自带的fft2一样。-Own series of programs, fast Fourier transform, results and matlab native fft2 the same.
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Size: 1024 |
Author: 方杭杭 |
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Description: This function is a very simple application of FFT2 for an image to
simulate the effect of bandpass filter with two cut off frequencies. One
can easily modify the programme to do the processes for different images,
and even implement highpass and lowpass filter-This function is a very simple application of FFT2 for an image to
simulate the effect of bandpass filter with two cut off frequencies. One
can easily modify the programme to do the processes for different images,
and even implement highpass and lowpass filter
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Size: 243712 |
Author: harish |
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Description: ADI公司DSP中BF561系列的时间抽取基2FFT的定点DSPs实现-ADI BF561 DSP, the company extracted the time series of fixed-point DSPs to achieve the base 2FFT
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Size: 29696 |
Author: 李伟 |
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Description: 利用图像处理技术获得二值化后，将其进行傅里叶变换，获得纤维取向分布。-Using image analysis technology,binary images were obtained.Then,using Fourier Transform Technique, fiber orientation distributions of nonwoven were obtained
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Size: 1024 |
Author: kelly |
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