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Description: scalogram.m Function to calculate the phase and amplitude scalograms of a 1D signal. The analysis is done using quadrature pairs of log Gabor wavelets.
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Size: 3072 |
Author: wang gang |
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Description: scalogram.m Function to calculate the phase and amplitude scalograms of a 1D signal. The analysis is done using quadrature pairs of log Gabor wavelets.
Platform: |
Size: 3072 |
Author: wang gang |
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Description: 最近和一位研友交流时谈到Matlab时频分析，了解到Matlab并不提供直接的绘制时间-频率分布图的命令，而是以时间-尺度图代之。不过很多时候我们要用到时间-频率图来分析信号，这两天集中搜集了相关的资料，其中在 MathWorks.com 的 Fileexchange 中心找到一个不错的Matlab时频分析工具，使用 Matlab GUI 界面开发，内核用C编写，感觉使用方便，分析和作图速度快，而且有多种图形表达方式选择。-Friends of the recent research and a reference to communicate Matlab time-frequency analysis, that Matlab does not provide a direct rendering of time- frequency distribution of command, but in time- Scalogram instead. But often we spend time- frequency diagram to analyze the signal, these two days focus on relevant information collected, of which the Fileexchange in MathWorks.com Center Matlab to find a good time-frequency analysis tool, the use of Matlab GUI interface development, which the preparation of nuclear use C, I feel easy to use, fast analysis and mapping, and expression has a variety of graphics options.
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Size: 769024 |
Author: 吴巧云 |
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Description: Fs = 100000 t = 0:1/Fs:.00296
x = 1-cos(4*pi*t) cos(2*pi*t*200)
h = spectrum.welch Instantiate a welch object.
psd(h,x, Fs ,Fs) Plot the one-sided PSD
-Fs = 100000 t = 0:1/Fs:.00296
x = 1-cos(4*pi*t) cos(2*pi*t*200)
h = spectrum.welch Instantiate a welch object.
psd(h,x, Fs ,Fs) Plot the one-sided PSD
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Size: 119808 |
Author: fair |
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Description: 用于图像处理的matlab工具包，由Peter Kovesi制作，主要包含特征提取，各项异性滤波，灰度转换、图像去噪等，对图像处理的人来说非常有用。
-MATLAB and Octave Functions
for Computer Vision and Image Processing， including:
Feature Detection via Phase Congruency
Spatial Feature Detection
Integral Images
Non-Maxima Suppression and Hysteresis Thresholding
Edge Linking and Line Segment Fitting
Test Grating for Edge Detection
Image Denoising
Surface Normals to Surfaces
Scalogram Calculation
Anisotropic diffusion
Grey Scale Transformation and Enhancement
Frequency Domain Transformations
Functions Supporting Projective Geometry
Feature Matching
Model Fitting and Robust Estimation
Fingerprint Enhancement
Interesting Synthetic Images
ASCII Image Generation
Rotation Transforms
Image Display, Image Writing and Miscellaneous
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Size: 6414336 |
Author: zhaoxk |
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Description: 研究小波尺度谱的代码，对于这方面的朋友很有帮助-The the study wavelet scalogram code, helpful friends
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Size: 4433920 |
Author: 里涛 |
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Description: 关于计算机视觉和图像的matlab工具箱。包括相位一致性特征，空间特征检测，积分图像，非极大值抑制和滞后阈值，边链接和线段拟合，去噪，等-MATLAB and Octave Functions
for Computer Vision and Image Processing。such as • Feature Detection via Phase Congruency
• Spatial Feature Detection
• Integral Images
• Non-Maxima Suppression and Hysteresis Thresholding
• Edge Linking and Line Segment Fitting
• Test Grating for Edge Detection
• Image Denoising
• Surface Normals to Surfaces
• Scalogram Calculation
• Anisotropic diffusion
• Grey Scale Transformation and Enhancement
• Frequency Domain Transformations
• Functions Supporting Projective Geometry
• Feature Matching
• Model Fitting and Robust Estimation
• Fingerprint Enhancement
• Interesting Synthetic Images
• ASCII Image Generation
• Rotation Transforms
• Image Blending
• Colourmaps and colour conversions
• Image Display, Image Writing and Miscellaneous
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Size: 6406144 |
Author: 任立超 |
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Description: 时频分析工具箱中提供了计算各种线性时频表示和双线性时频分布的函数，matlab并不提供直接的绘制时间-频率分布图的命令，而是以时间-尺度图代之。不过很多时候我们要用到时间-频率图来分析信号!-Time-frequency analysis toolbox provides functions and bilinear time-frequency distribution of frequency is represented calculate various linear, matlab does not provide a direct rendering time- frequency distribution of command, but in time- scalogram instead. However, many times we have to use the time- frequency graphs to analyze the signal!
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Size: 1930240 |
Author: |
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Description: 对四分量的信号进行时频处理，得到小波尺度图、平滑伪wigner图、WVD图。有利于对信号进行很好的分析。-Four components of the signal time- frequency to give Scalogram, smoothed pseudo wigner diagram, WVD FIG. Conducive to good analysis of the signal.
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Size: 1024 |
Author: 刘婷 |
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