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Influence-of-ENSO
利用连续小波变换,交叉小波变换研究ENSO对长江流域径流的影响。(Using the continuous wavelet transform, ENSO cross wavelet transform research on the influence of the Yangtze river basin runoff.)
- 2013-09-25 11:43:36下载
- 积分:1
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xiaobofenxijiangyi
说明: 小波(Wavelet)这一术语,顾名思义,“小波”就是小的波形。所谓“小”是指它具有衰减性;而称之为“波”则是指它的波动性,其振幅正负相间的震荡形式。与Fourier变换相比,小波变换是时间(空间)频率的局部化分析,它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。有人把小波变换称为“数学显微镜”。
这套讲义生动详实的快速带领初学者掌握小波的基本要点,是不可多得的好材料!(This is a handbook about Wavelet.)
- 2009-09-02 15:44:17下载
- 积分:1
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wavelet
一个图像小波数字水印的matlab代码,利用小波变换,在DC分量上实现自适应编码(An image digital watermarking wavelet matlab code, the use of wavelet transform, the DC component on the realization of adaptive coding)
- 2009-03-11 22:44:25下载
- 积分:1
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contourlet_toolbox.tar
2002年,MN Do和Martin Vetterli提出了一种“真正”的图像二维表示方法:Contourlet变换,也称塔型方向滤波器组(Pyramidal Directional Filter Bank, PDFB)。Contourlet变换是利用拉普拉斯塔形分解(LP)和方向滤波器组(DFB)实现的另一种多分辨的、局域的、方向的图像表示方法。(In 2002, MN Do and Martin Vetterli proposed a "real" two-dimensional representation of images: Contourlet transform, also known as Pyramidal Directional Filter Bank (PDFB). Contourlet transform is another multi-resolution, local and directional image representation method based on Laplacian pyramid decomposition (LP) and directional filter banks (DFB).)
- 2020-09-11 14:38:01下载
- 积分:1
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denoising
小波变换、EMD以及EMD结合小波变换几种常用的时频去噪方法的对比分析(Wavelet transform, EMD and the EMD of several commonly used wavelet transform time-frequency denoising Comparative Analysis)
- 2021-01-06 10:38:53下载
- 积分:1
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ChirpLab
线调频小波路径追踪算法的程序,对研究瞬时频率估计有很大的参考价值。(Chirplet path tracing algorithm of the program, the study of instantaneous frequency is estimated that there is a great reference value.)
- 2012-04-16 16:43:37下载
- 积分:1
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DWTsimplefusion
这是基于小波变换的图像融合程序,附带融合图像(This is based on the wavelet transform image fusion procedures, fringe Image Fusion)
- 2020-06-26 06:20:02下载
- 积分:1
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wavelib
说明: 用c++实现小波变换,参考matlab实现(Using C + + to realize wavelet transform, referring to matlab to realize)
- 2020-06-21 16:24:31下载
- 积分:1
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Wavelet
小波包变换分析信号的MATLAB程序,可用于提取故障特征向量(Wavelet packet transform analysis of signals in MATLAB procedures, can be used to extract fault feature vector)
- 2020-07-01 05:40:01下载
- 积分:1
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Savitzky-Golay filter
Savitzky-Golay滤波是一种工程应用数据处理中高效的滤波方法,能同时得到平滑后的数据和数据梯度。(Savitzky-Golay filter is an efficient filtering method in engineering application data processing, which can simultaneously obtain the smoothed data and data gradient.)
- 2018-03-28 11:04:34下载
- 积分:1