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小波分解在图像处理 Wavelets
小波分解在图像处理和电能质量分析中应用广泛,本文应用小波分解的方法将高频的暂态信号提取出来,获取暂态信号的特征量,就能够有效地计算暂态信号。(Wavelet decomposition in image processing and power quality analysis is widely used, this application of wavelet decomposition method to extract high-frequency transient signals, to obtain the amount of transient characteristics of the signal, we can effectively calculate the transient signal.)
- 2011-06-20 21:11:45下载
- 积分:1
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Wavelet-signal-
小波信号分解与重构的Matlab程序,程序里边涉及卷积的直接调用的Matlab的conv()函数。(Wavelet signal decomposition and reconstruction in Matlab,Program inside invoked directly related to the convolution of Matlab conv () function.)
- 2011-11-04 21:32:13下载
- 积分:1
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dfdfd
基于小波域的图像压缩分组编码及其差错隐藏.(Image compression based on wavelet packet coding and error to hide.)
- 2011-11-26 14:56:27下载
- 积分:1
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OouraFFT-master
快速傅里叶变换,fft,ourrafft master(Fast Fourier Transform Algorithm)
- 2020-11-13 22:29:42下载
- 积分:1
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lift53
说明: 53小波提升的编解码代码,可用于图像的53小波变换(53)
- 2021-04-17 17:18:52下载
- 积分:1
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MyWaveletDenoise小波去噪
说明: 小波变换去噪方法,过滤高频低频波,C++代码(Wavelet transform denoising method, filtering high frequency low frequency wave, C ++ code)
- 2020-05-09 17:38:51下载
- 积分:1
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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
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gabor_filter
实现对图像的gabor小波变换,利用了opencv的函数库,可实现方向和尺度等多项选择。(Achieve image gabor wavelet transform, using the opencv function library, enabling the direction and scale and many other options.)
- 2010-08-06 15:46:39下载
- 积分:1
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decomposition
运行emd,得到输入信号X的固有模态函数(imf),每列代表着信号X的一阶分量,X就是我们采集的信号。
hhtdn是hht去噪的程序,可以不看,仅看emd 和 findpeaks
wvtdn是wavelet去噪程序,如果只是分解信号,仅用下面的语句即可
[C,L] = wavedec(x_noise,dl,wn);
x_noise就是我们采集的信号,dl是分解的阶数,wn是分解的母小波名称(% Empiricial Mode Decomposition (Hilbert-Huang Transform)
% imf = emd(x)
% Func : findpeaks)
- 2021-04-13 22:28:55下载
- 积分:1
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MUSIC-through-C-and-MATLAB
旨在用C语言程序和MATLAB程序通过MUSIC算法对“信号提取”进行实现,结果证明程序运行效果良好,分辨率较高(Designed with C language program and MATLAB program through the MUSIC algorithm " signal extraction" for implementation, the results show the program running well, higher resolution)
- 2013-07-14 23:13:22下载
- 积分:1