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用matlab实现基于小波的图像压缩。其中还包括与之做比较的离散傅立叶变换压缩程序-using Matlab wavelet-based image compression. It also includes comparison with the discrete Fourier Transform compression process
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二维提升小波,matlab实现.Multi-level discrete two-dimension wavelet transform based on lifting method.
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小波去噪matlab程序,在噪声环境下语音信号的增强,语音信号为读入的声音文件,噪声为正态随机噪声,在小波基 db3 下进行一维离散小波反变换.-Matlab wavelet denoising procedure, noise enhancement of speech signals, speech signal is read into the sound file, the noise is normal random noise, the wavelet ' db3' u
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各种数字水印的matlab源代码,包括离散余弦,小波变换等-A variety of digital watermarking matlab source code, including discrete cosine, wavelet transform
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用matlab实现基于小波的图像压缩。其中还包括与之做比较的离散傅立叶变换压缩程序-using Matlab wavelet-based image compression. It also includes comparison with the discrete Fourier Transform compression process
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MATLAB函数为pm哈尔1-D DWT算法
离散哈尔的基本原理小波变换-MATLAB function for pm Haar 1-D DWT algorithm,Fundamentals of the discrete Haar wavelet transform
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MATLAB函数为pm Haar 1-D IDWT算法
离散Haar小波逆变换的基本原理-MATLAB function for pm Haar 1-D IDWT algorithm,
Fundamentals of the discrete Haar wavelet transform
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3.1语音信号的同态处理和倒谱分析30
3.1.1同态处理的基本原理30
3.1.2复倒谱和倒谱31
3.2离散余弦变换34
3.3Mel频率倒谱系数的分析37
3.3.1Mel滤波器组37
3.3.2MFCC特征参数提取38
3.4小波和小波包变换43
3.4.1小波变换43
3.4.2小波包变换44
3.4.3小波包算法45
3.4.4MATLAB中一维小波和小波包变换函数46
3.4.5MATLAB语音信号小波和小波包变换的例子49
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刚刚测试完成的matlab代码,实现离散小波变换,进行主要成分的分析进行数据降维,本程序主要是进行各种模式的识别算法,temp变换流程,temp1高阶优化过程。
-Just test completed matlab code to achieve discrete wavelet transform to analyze the main component for data dimensionality reduction, this program is mainly for vari
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matlab code for discrete wavelet transform
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It is implementation of redundant discrete wavelet transform and singular value decomposition. platform for this is matlab 2009b.
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STFT和ST变换的基本函数,和一个stft的一个例程-This code computes the Stockwell transform (S-Transform) of a one dimensional series without for loop, thereby making it computationally fast and simple. S-Transform was proposed in 1996. A nice tutorial on S-Transform can
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06一维连续小波变换 画出连续小波整数变换尺度和用sym2小波尺度谱,使用分形信号作为输入
07 分形信号 离散和连续小波变换 对比-One dimensional continuous wavelet transform and draw the continuous One dimensional continuous wavelet transform and draw the continuous integer wavelet transform scale spectrum w
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This is a matlab file to calculate the discrete wavelet transform of any image and then we use Huffman codes to compress the coefficients of the DWT and reconstruct the ompressed image again
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MATLAB图像处理中傅里叶变换,离散余弦变换,小波变换的简单应用(simple applications of Fourier transform, discrete cosine transform, wavelet transform in MATLAB image processing,)
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Discrete Wavelet Transform in MATLAB
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利用MATLAB平台,离散小波变换分析,(Discrete wavelet transform analysis)
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mallatm.m:一维mallat快速分解函数
mallatr.m:一维mallat快速重建函数
mallatm2d.m:二维mallat快速分解与合成算法的演示函数,要调用mallatm.m与mallatr.m
在matlab命令行键入(Two dimensional discrete wavelet transform)
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在MATLAB环境中,进行图像的离散傅里叶变换和离散余弦变换
在MATLAB环境中,进行图像的离散小波变换,观察子带对重建图像的影响,理解小波变换的多分辨率特性(In the MATLAB environment, the image of the discrete wavelet transform, observe the sub-band on the reconstruction of the image, understand the multi-resolution characte
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(1)心电信号预处理
心电信号是一种低频且含有众多噪声干扰的信号。针对心电信号存在的
噪声干扰问题,本文采用了平稳小波变换结合双变量阈值的方法对其进行去 噪处理。通过对心电信号进行八层平稳小波变换,得到不同的小波系数,采
用双变量阈值函数表达式对其进行处理得到新的小波系数,最后进行逆平稳
小波变换实现小波重构,完成心电信号去噪。Matlab 仿真结果显示,本文算
法的准确率较高,信噪比达到 84.5934dB。 (2)心电信号波形识别
反映心电信号的特征部分往往是信号的突变点,因此需
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