Description: This program is used for harmonic wavelet transform-This program is used for harmonic wavelet t ransform Platform: |
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Author:lyh |
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Description: 关于小波变换进行谐波分析的文献，讲解了各种小波变换的，资料很全-Wavelet transform on harmonic analysis of the literature on a variety of wavelet transform, the data is very wide Platform: |
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Author:miaoguijun |
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Description: 基于小波变换的三维模型提取技术的毕业论文,包括代码和答辩ppt.1．实现了三维模型的表示和规范化预处理过程，在此基础上，开发了进行检索实验的可视化特征提取实验平台。
2．结合球面调和变换获取旋转不变量具有降低特征向量维数的特性，实现了基于光线投射的特征提取方法，通过检索评价实验确定了参数的最佳取值。
3．分析了基本的光线投射方法和改进的光线投射方法的缺陷，提出了一种基于三维小波变换的特征描述方法。对光线投射算法进行了扩展，将切比雪夫采样点序列进行离散小波变换，然后利用球面调和变换获得旋转不变的特征向量。
4．将小波变换引入到体素表示的三维模型中，分别实现了表面体素小波变换和实体体素小波变换的特征提取，通过实验比较分析实体体素小波变换优于表面体素小波变换。
-Wavelet-Based Extraction of three-dimensional model of thesis, including the reply code and ppt.1. Three-dimensional model of the implementation and standardization of the express pre-treatment process, on this basis, developed a visual search experiment of feature extraction experiment platform.
2. Combination of spherical harmonic transform to obtain rotation invariant feature vector with reduced dimension of the characteristics of ray-casting based on the implementation of feature extraction methods, the evaluation by searching the parameters of the experiment to determine the best value.
3. Analysis of the basic ray casting method and the ray casting method to improve the shortcomings, a wavelet transform based on the three-dimensional characterization of the Ways. Ray-casting algorithm for the expansion of the sampling points Chebyshev sequences discrete wavelet transform, then the use of spherical harmonic transform to obtain rotation invariant feature vector.
4. Wavelet tr Platform: |
Size: 2632704 |
Author:周光有 |
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Description: 利用小波变换含有突变点的信号进行谐波检测，得到信号突变时刻-Wavelet transform the signal with the harmonic mutations detected by the signal point mutation Platform: |
Size: 1024 |
Author:阿虎 |
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Description: 传统的信号理论，是建立在Fourier分析基础上的，而Fourier变换作为一种全局性的变化，其有一定的局限性。在实际应用中人们开始对Fourier变换进行各种改进，小波分析由此产生了。小波分析是一种新兴的数学分支，它是泛函数、Fourier分析、调和分析、数值分析的最完美的结晶；在应用领域，特别是在信号处理、图像处理、语音处理以及众多非线性科学领域，它被认为是继Fourier分析之后的又一有效的时频分析方法。 小波变换与Fourier变换相比，是一个时间和频域的局域变换因而能有效地从信号中提取信息，通过伸缩和平移等运算功能对函数或信号进行多尺度细化分析（Multiscale Analysis），解决了Fourier变换不能解决的许多困难问题。-The traditional signal theory, is based on Fourier analysis based on Fourier transform, and as a kind of global change, it has some limitations. In the actual application of Fourier transform people began to various improved, wavelet analysis produced. Wavelet analysis is a new branch of mathematics, it is functional, Fourier analysis, harmonic analysis, numerical analysis of the crystallization of the most perfect In the fields of application, especially in signal processing, image processing, audio processing as well as many nonlinear scientific fields, it is considered to be the Fourier analysis after another effective time-frequency analysis method. Wavelet transformation and Fourier transform, compared is a time and frequency domain and the local transform can effectively extract information from signal, through the telescopic peace shift etc operation function of the function ?
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Size: 1024 |
Author:彭立军 |
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Description: 小波分析是建立在泛函分析、调和分析、数值分析、逼近论和傅里叶分析等的基础上发展起来的新的时频分析方法。与经典的傅里叶分析相比较，小波变换是空间(时间)和频率的局部变换，因而能有效地从信号中提取信息，因此小波分析有着许多显著的优点。小波变换是空间(时间)和频率的局部变换，因而能有效地从信号中提取信息。通过伸缩和平移等运算功能可对函数或信号进行多尺度的细化分析，解决了Fourier变换不能解决的许多困难问题。
小波分析是时间—尺度分析和多分辨分析的一种新技术，它在信号分析、语音合成、图像识别、计算机视觉、数据压缩、地震勘探、大气与海洋波分析等方面的研究都取得了有科学意义和应用价值的成果。
-Wavelet analysis is based on the functional analysis harmonic analysis numerical analysis approximation and Fourier analysis developed on the basis of time-frequency analysis method and new classic of Fourier analysis in comparison, wavelet transform is space (time) and frequency of local transform, thus can effectively extract information from the signal, so the wavelet analysis has many
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Size: 869376 |
Author:zhouxiaolin |
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Description: 离散小波变换和FFT变换的混合算法，对谐波分量进行分析，求出各平稳谐波分量幅值及时变信号的发生时间-Hybrid algorithm of discrete wavelet transform and FFT transform analysis of the harmonic components, the calculated steady harmonic component amplitude and time-varying signal occurred Platform: |
Size: 1024 |
Author:superman |
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Description: 基于小波变换和 HHT 的分布式并网系统谐波检测方法。
该方法利用小波变换多分辨率分析思想对信号进行划分，并对划分后的信号进行经验模态分解，得到一系列的经验模态函数IMF，并从 IMF分量中提取出基波分量和高次谐波；再对IMF分量进行Hilbert 变换得到信号的频率、幅值信息。-Wavelet transform and HHT based distributed systems and network harmonic detection method.
The method uses multi-resolution analysis of wavelet transform ideological divide the signal, and the signal is divided after the empirical mode decomposition to obtain a series of empirical mode function IMF, and extract the fundamental component and a component of the high-order IMF harmonics and then the IMF component of Hilbert transform frequency, amplitude information of the signal. Platform: |
Size: 403456 |
Author:Bond |
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Description: 通过实验表明小波包变换能精确地从谐波信号中分离出基波，并能根据需要分离出任意谐波信号，是一种很好的电力系统谐波分析工具。-Experiments show that wavelet packet transform can accurately isolated in harmonic signal wave, and can according to need to separate out any harmonic signals,It is a kind of very good power system harmonic analysis tools. Platform: |
Size: 223232 |
Author:shelly |
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Description: 该功能主要是计算harmoonic小波变换的旋转设备状态监测的基于振动的轴承故障诊断。-The function basically is for computing Harmoonic wavelet transform for condition Monitoring of rotating equipments by vibration based bearing fault diagnosis. Platform: |
Size: 1024 |
Author:王奇 |
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