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wavelet

于 2018-06-09 发布 文件大小:48KB
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  利用小波分析原理对某信号进行分解与重构,并可提取指定层数上的高、低频信号。(A signal is decomposed and reconstructed by using wavelet analysis principle, and high and low frequency signals can be extracted from the specified number of layers.)

文件列表:

experiment_1.m, 1917 , 2017-05-12
小波试验1.docx, 51787 , 2017-05-12

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  • Wavelet53
    53小波变化的vc程序,很详细,有一维和二维,可以对图像进行处理。(53 wavelet transform vc program, very detailed, one-dimensional and two-dimensional image processing.)
    2021-03-27 11:29:12下载
    积分:1
  • 说明:  图像小波变换,小波变换(wavelet transform,WT)是一种新的变换分析方法,它继承和发展了短时傅立叶变换局部化的思想,同时又克服了窗口大小不随频率变化等缺点,能够提供一个随频率改变的“时间-频率”窗口,是进行信号时频分析和处理的理想工具。它的主要特点是通过变换能够充分突出问题某些方面的特征,能对时间(空间)频率的局部化分析,通过伸缩平移运算对信号(函数)逐步进行多尺度细化,最终达到高频处时间细分,低频处频率细分,能自动适应时频信号分析的要求,从而可聚焦到信号的任意细节,解决了Fourier变换的困难问题,成为继Fourier变换以来在科学方法上的重大突破。(Image Wavelet Transform)
    2020-06-18 04:40:01下载
    积分:1
  • detect_R_Wavelet
    在matlab环境下,实现ECG信号R波的检测,使用的方法是小波变换。(Matlab environment, the realization of the R wave of the ECG signal detection, the methods used wavelet transform.)
    2021-04-25 09:48:46下载
    积分:1
  • wavelet
    说明:  matlab 小波分析源码 小波去噪 仿真分析(matlab source wavelet analysis wavelet denoising simulation analysis)
    2008-11-21 22:31:07下载
    积分:1
  • wavelet_ezw
    基于小波变换的图像量化编解码,使用零树编码方法(based on wavelet transform quantitative image codecs, the use of zero-tree coding method)
    2006-12-03 11:46:54下载
    积分:1
  • ConstructWaveBaseFunction
    说明:  紧支撑小波基的构造。 以Daubechies小波滤波器系数为例,推导出小波函数及尺度函数,并画出其图像. void Convolution(double* pShortData, int nShort, double* pLongData, int nLong) int CalcScaleFunction(double* pOutData) int CalcWaveletFunction(double* pOutData) Convolution()不是通用的离散卷积代码,而是简单地实现了后面两个函数需要的离散卷积,它要求输入的前一个数组长度小于后一数组长度,而且卷积结果就直接覆盖存储在后一数组中。CalcScaleFunction()计算尺度函数,CalcWaveletFunction()计算小波函数。 (Compactly supported wavelet bases constructed. To Daubechies wavelet filter coefficients as an example, the derived wavelet function and scaling function, and draw their images. Void Convolution (double* pShortData, int nShort, double* pLongData, int nLong) int CalcScaleFunction (double* pOutData) int CalcWaveletFunction ( double* pOutData) Convolution () instead of generic discrete convolution code, but simply the realization of a function behind the need for two discrete convolution, which requires input before an array length is less than the array length of the latter, but the result of convolution directly covered by the latter is stored in the array. CalcScaleFunction () calculated scaling function, CalcWaveletFunction () calculation of wavelet function.)
    2020-11-10 20:19:45下载
    积分:1
  • 对图像的二次压缩.
    说明:  给出了在matlab环境下的源代码,经过了上机调试,可以实现小波变换对图像的二次压缩!(given Matlab environment in the source code, after the Machine, can achieve a wavelet transform of the second image compression!)
    2005-09-19 10:59:51下载
    积分:1
  • code
    小波域图像滤波,采用双变量收缩函数发实现(Bivariate Shrinkage Functions for Wavelet-Based Denoising)
    2010-10-27 14:39:16下载
    积分:1
  • haar
    利用Harr将图像进行3层小波变换,并进行重建。里面包含测试图片及变换后系数重新排列后的结构图。(Harr is used to transform the image into three-layer wavelet transform and reconstruct it. It contains the test picture and the structure chart of the coefficient rearrangement after transformation.)
    2019-05-15 17:09:28下载
    积分:1
  • 3
    说明:  故障行波波头识别:模极大值原理识别故障行波波头(Modulus maxima principles identified wave head)
    2013-09-23 11:35:05下载
    积分:1
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