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1.图像频域处理正交变换的matlab实例
2.含有的频域变换内容如下：
正交变换通用算子
傅立叶变换
傅立叶变换的原理
傅立叶性质
二维离散傅立叶变换（ 2DDFT ）
快速傅立叶变换（ FFT ）
傅立叶变换的研究与应用
离散余弦变换
DCT 变换矩阵
dct2 函数和 dctmtx 函数
Walsh- Hadamard 变换
Radon 变换 -1. Image processing orthogonal freq
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基于Matlab的压缩感知视频编码程序。DCVS的最新理论算法程序。稀疏矩阵采用BWHT(沃尔什-哈达玛矩阵)，重构算法用GPSR。-Matlab-based video compression perceptual coding process. DCVS the latest theoretical algorithm program. Sparse matrix with BWHT (Walsh- Hadamard matrix), reconstruction algorithm wit
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Generates the Walsh-Hadamard codes and checks orthogonality
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基于MATLAB的图像变换，wash变换，可以完成边缘提取与检测等的要求-MATLAB-based image transformation, wash transform, edge extraction and detection can complete the requirements, etc.
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第十章 MATLAB 图像正交变换
10.1 正交变换通用算子
10.2 傅立叶变换
10.2.1 傅立叶变换的原理
10.2.2 傅立叶性质
10.2.3 二维离散傅立叶变换（ 2DDFT ）
10.2.4 快速傅立叶变换（ FFT ）
10.2.5 傅立叶变换的研究与应用
10.3 离散余弦变换
10.3.1 DCT 变换矩阵
10.3.2 dct2 函数和 dctmtx 函数
10.4 Walsh- Hadamard 变换
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任意维Walsh码(包含①直积法②系数（二进制）相乘法)的产生，有时域图及相关性图。-Victoria Walsh of arbitrary code (including the direct quadrature method ① ② coefficient (binary) multiplication phase) generation, sometimes the domain map and correlation chart.
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Walsh Hadamard codes algorithm
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A simple program for simulation of CDMA system with Walsh-Hadamard Code.
Result of this program is plot of BER vs SNR.
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The function implement the 1D sequency(Walsh) ordered fast Walsh-Hadamard transform which can be used in signal processing, pattern recongnition and Genetic alogorithms.
This algorithm uses a Cooley-Tukey type signal flow graph and is implemented
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Walsh-Hadamard codes are mutually orthognal codes,
thus when used in synchronous CDMA, the interference between users is zero.
This programm generates Walsh-Hadamard codes and also checks the orthogonality.
You can change the code length by
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利用快速傅立叶算法，实现快速沃尔什-哈达玛变换及其逆变换-Using fast Fourier algorithm, fast Walsh- Hadamard transform and its inverse transform
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MATLAB 图像正交变换
正交变换通用算子 傅立叶变换
离散余弦变换 Walsh- Hadamard 变换 Radon 变换 小波变换
-MATLAB image orthogonal transform orthogonal transform generic operator Fourier transform discrete cosine transform Walsh-Hadamard transform Radon transform wavelet trans
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it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in th
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二维图像的沃尔什-哈达玛变换matlab实现。-Two-dimensional image of the Walsh- Hadamard transform matlab.
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Matlab code to study the decorrelation and energy packing efficiency of three transform
techniques: Karhunen-Loève transform (KLT), discrete-cosine transform (DCT), and Walsh-Hadamard transform (WHT). Using a given vector of signal samples, it tra
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This Matlab Code models a Rayleigh fading channel using a modified Jakes channel model.
A modified Jakes model chooses slightly different spacings for the scatterers and scales their waveforms using Walsh–Hadamard sequences to ensure zero cross-co
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It includes coding for walsh code encoding in matlab.The Walsh functions can be generated (or computed) by many methods. We can construct the Walsh functions by:
• Using Hadamard matrices
• Exploiting the symmetry properties of Walsh
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用解析式定义或矩阵式定义自行编写进行二维DCT和离散沃尔什-哈达玛变换的函数。
在Matlab中对给定图像进行二维离散傅立叶变换，并显示其居中的频谱图，可用Matlab自带函数进行实验。
分别用Matlab自带的dct2()和idct2()对给定图像进行二维DCT变换，并以图像的形式显示其变换系数矩阵。
-And the preparation of two-dimensional DCT is defined analytically discrete Wals
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一、 计算图象的频谱函数
设计图象120*30/256*256；选用Matlab函数直接调用实现。
二、根据计算证明傅立叶变换的性质
1， 共轭对称性:
F(u,v)=F*(-u,-v) ;
三、图象的频域滤波
1， 设计一个指数低通滤波器，对两图象（f1(x,y)为30*30/256*256的图象；f2(x,y)=p3-02图象）进行低通滤波，观察分析空域图象和频谱分布的变化。
四、图象变换比较
利用现有的离散傅立叶变换、离散余弦变换、Walsh-Had
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用matlab实现了傅里叶变换，离散余弦变换和沃什哈达玛变化。需要下载工具性app designer(Fourier transform, discrete cosine transform and Walsh Hadamard change are realized by MATLAB. Need to download tool app Designer)
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