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similarity
- 基于平稳双正交小波变换实现图象梯度计算,本人用MATLAB编了一个,供大家参考-biorthogonal wavelet transform image gradient calculation, I used a series MATLAB, for your reference
Invariant
- FWT_Stat用信号的平稳位移计算二进小波正变换 MM2_DWT图像的二进小波变换的模极大-FWT_Stat using signal to the smooth displacement dyadic wavelet transform is the two images MM2_DWT Progressive wavelet transform modulus maxima
xiaobobianhuanyuyingyong
- 某一直升机齿轮箱上的早期损伤的特征是,在伴随振动信号上产生一个可变周期的非平稳扰动信号。要求按此特征构造一组有物理意义的数据仿真早期故障信号,应用小波变换技术分析故障的特征和发生时刻。-a helicopter gearbox early on the characteristics of the injury, In addition to the vibration signal produced a variable cycle
matlab
- matlab非平稳信号噪声消除 小波变换与傅里叶变换对比-matlab noise elimination of non-stationary signal Wavelet Transform and Fourier Transform Comparison
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- matlab非平稳信号噪声消除 小波变换-matlab denoise use wavelets
Three-non-stationary-time-frequency-signal
- 三种非平稳信号时频分析的方法 窗口傅里叶变换、wigner分布和小波变换-Three non-stationary time-frequency analysis window Fourier transform, wigner distribution and wavelet transform
Waveletsignal
- 阐述了小波变换去除信号噪声的基本原理和方法,研究利用小波变换技术对信号噪声进行抑制和去除非平稳信号的噪声。然后利用MATLAB软件编制程序实现了基于小波变换的正弦信号的去噪仿真分析,仿真结果表明小波变换去除噪声具有很强的实用性。-MATLAB Wavelet-based signal
main
- 一种数小波字水印算法,利用平稳小波变换进行图象处理-A Wavelet Watermarking Algorithm
lFusion
- 小波变换是在傅立叶变换的基础上发展起来的,它优于傅立叶分析的地方是它在空域和时域都是局部化的,其局部化格式随频率自动变换,在高频处取窄的时(空)间窗,在低频处取宽的时(空)窗,适合处理非平稳信号,在图像处理、模式识别、机器人视觉、量子力学等领域得到广泛应用。-Wavelet transform is a Fourier transform developed on the basis, it is better than Fourier
Stransform
- 对非平稳信号进行时频分析,分析结果比小波变换结果要好-Non-stationary signal in time-frequency analysis and the results are better than the wavelet transform results
Stationary-wavelet-transform
- 平稳小波变换的matlab程序 还包括去噪 什么的应用-Stationary wavelet transform denoising matlab program also includes the application of what
SWT
- 实现图像的二维平稳小波变换,包含对源图像的分解与重构-2-D stationary wavelet transform, including the decomposition and reconstruction of the source image
chengxu-qq
- 包含了图像熵的程序,三种小波变换融合方法,以及一种平稳小波变换。带有结果图-Contains a program of the image entropy three wavelet transform fusion method, and a stationary wavelet transform. With the results of Figure
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- 以离散平稳小波变换的心电信号噪声去除方法为基础,根据噪声的不同来源及其频带分布特点,对变换后的细节信号采用不同的阈值去噪方案。并提出一种基于准则原理的阈值选取方法。经国际标准数据库中验证,试验表明,该方法行之有效-With discrete stationary wavelet transform of ecg signal to noise removal method as the foundation, according to
swt1
- 小波变换 ,平稳小波变换,对信号进行8层分解,对第4层处理-Wavelet transform
SWT
- 基于平稳小波变换的图像融合。低频分量取平均,高频分量取绝对值最大。最后做逆平稳小波变换。-stationary wavelet transfrom.Averaged low frequency components, high frequency components of the maximum absolute value. Finally, do the inverse stationary wavelet transform.
image-_wavelet-decomposition
- 对图像进行小波分解,如单层二维离散小波分解,利用sym4小波函数对图像进行3层对图像进行3层平稳小波变换等,之后是对分解图像消躁,融合等的工作。-The image wavelet decomposition, such as single two-dimensional discrete wavelet decomposition using sym4 wavelet function to the image of 3 layers
3971002xiaobo
- 小波变换分析,含有小波源程序和仿真主程序,适用于非平稳冲击振动信号的时频特性分析。(The wavelet transform analysis, which contains the small wave source program and the simulation main program, is suitable for the analysis of the time-frequency characteristic of
12065481SWT
- 平稳小波变换的代码,十分好用,强烈推荐,强烈推荐(Stationary wavelet transform code, very easy to use, strongly recommended, strongly recommended)
心电信号检测与分类算法的研究
- (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