Description: ％WAVETEST Example Matlab script for WAVELET, using NINO3 SST dataset
％
％ See \"http://paos.colorado.edu/research/wavelets/\"
％ Written January 1998 by C. Torrence
％
％ Modified Oct 1999, changed Global Wavelet Spectrum (GWS) to be sideways,
％ changed all \"log\" to \"log2\", changed logarithmic axis on GWS to
％ a normal axis.
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Author:韩伟光 |
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Description: 本文构造一种扩频和量化混合模型,并提出了一种图像多小波变换域内基于扩频和量化的混合数字水印方案,通过理论分析给出了扩频长度、信道容量、检测错误率等参数间的关系,实验结果表明算法实现了水印鲁棒性前提下的水印容量最大化的目的.-this paper, a spread spectrum and quantitative hybrid model, and proposes a number of images based on wavelet transform domain spread spectrum and quantification of mixed digital watermarking programs, Through theoretical analysis of the spread spectrum given length, channel capacity, the error rate testing parameters such as the relationship between them, Experimental results show that the watermark algorithm robust watermark under the premise of the purpose of maximizing capacity. Platform: |
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Author:阳光 |
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Description: 小波分析，及小波能量谱分析，信号分析与处理技术小波分析，及小波能量谱分析，信号分析与处理技术-wavelet analysis, and wavelet energy spectrum analysis, signal analysis and processing technology wavelet analysis, and wavelet energy spectrum analysis, Signal Analysis and Processing Technology Platform: |
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Author:曾捷 |
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Description: ％WAVETEST Example Matlab script for WAVELET, using NINO3 SST dataset
％
％ See "http://paos.colorado.edu/research/wavelets/"
％ Written January 1998 by C. Torrence
％
％ Modified Oct 1999, changed Global Wavelet Spectrum (GWS) to be sideways,
％ changed all "log" to "log2", changed logarithmic axis on GWS to
％ a normal axis.
- WAVETEST Example Matlab script for WAVELET, using NINO3 SST dataset See http://paos.colorado.edu/research/wavelets/ Written January 1998 by C. Torrence Modified Oct 1999, changed Global Wavelet Spectrum ( GWS) to be sideways, changed all log to log2 , changed logarithmic axis on GWS to a normal axis. Platform: |
Size: 10240 |
Author:韩伟光 |
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Description: 编写一个程序计算并显示一幅二维图象的Fourier变换（幅度和相位谱）及其逆变换，要求用FFT实现-procedures for the preparation of a calculation and display a two-dimensional image of the Fourier transform (amplitude and phase spectrum) and its inverse transform, called for using the FFT Platform: |
Size: 746496 |
Author:祖超 |
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Description: 小波包分析提取振动信号中的特征频率，以及能量谱分析计算-wavelet packet analysis vibration signal from the characteristic frequency, and the energy spectrum analysis -Extraction of wavelet packet analysis in the vibration signal characteristic frequency, as well as the calculation of the energy spectrum analysis-wavelet packet analysis vibration signal from the characteristic frequency, and the energy spectrum analysis Platform: |
Size: 10240 |
Author:赵俊 |
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Description: 小波变换源码，国外VC开发的，效果比较好
I ve been involved with wavelet-analysis since my Ph.D studies and over the years developed various wavelet-transforms C++ libraries. This one concerns 2D implementation of the Fast wavelet transform (FWT). The 2D FWT is used in image processing tasks like image compression, denoising and fast scaling. I intended to design the implementation of the 2D FWT with custom filter support and simple in usage. I ve equipped it with known filter families: Daubechies, Coiflets and Biorthogonal wavelets. The wavelets used in compression tasks are Bior53 and Bior97. With Daub1 filter you can achieve fast dyadic image scaling algorithm. You may also experiment with other filters for compression and denoising and compare the results, you may also add your custom wavelets. The nice feature of this library is that reconstruction FWT filters are rearranged the way that you perform just convolution operations on the spectrum, which is very important if you d like MMX -err Platform: |
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Author: |
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Description: CDMA 的仿真程序，Frequency Hopping Spread Spectrum,Random frequency hopps to form a spread signal-CDMA s simulation program, Frequency Hopping Spread Spectrum, Random frequency hopps to form a spread signal Platform: |
Size: 3072 |
Author:hws |
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Description: 带点中文注释的小波变换，计算频率谱用的，适合初学者。-A bit of English Notes wavelet transform, used in calculating the frequency spectrum, suitable for beginners. Platform: |
Size: 1024 |
Author:郭炫宇 |
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Description: 建立了信号从扩频、加干扰信号到解扩、求误码率的仿真模型系统。
经过小波镜像处理的与理想的状况的比较。-Established from the spread spectrum signal, plus interference signal to the de-spread, and the bit error rate system simulation model. After wavelet image processing and comparison of the ideal situation. Platform: |
Size: 5120 |
Author:以琳 |
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Description: 基于扩频序列和小波变换的数字水印算法
的仿真程序-Sequence spread-spectrum based on wavelet transform and the digital watermarking algorithm simulation program Platform: |
Size: 7168 |
Author:无悔 |
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Description: 基于纹理谱描述子的图像检索
提出一种新的纹理谱描述子应用于基于内容的图像检索中.讨论了小波变换的思想和纹理谱概念的联
系,根据纹理的视觉特性,提出纹理模式等价类的概念,设计出更合理的纹理谱描述子来描述图像的纹理特征.该纹
理模式刻画了领域内像素灰度变化模式,以纹理谱直方图方式表示图像纹理内容.分析了纹理谱的对称不变性和旋
-This paper presents a new texture spectrum descriptor for content-based image retrieval(CBIR).The
relation between wavelet transition and texture spectrum method is discussed.This paper proposes the concept of
texture pattern equivalent according to texture visual nature to educe more rational texture spectrum descriptor.The
proposed texture patterns depict the variational pattern of pixel gray scales in a domain to descript images texture
feature.It represents image content in the form of texture spectrum histogram.The symmetry invariant and rotation
robusticity are discussed.Comparison with Gabor features using general image dataset indicate that the proposed
texture descriptor takes lower extracting time and provides higher image retrieval accuracy.
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Author:swx |
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Description: 用双谱和小波变换去除信号中加性高斯噪声的相关程序
1.实现单个变量的双谱分析程序
2.用傅立叶反变换求自相关函数的程序
3.用fft求取喜好频谱、功率谱、均方根谱、对数谱的程序
4.读取.wav语音信号后用小波去加信白噪声的程序
5.用各种小波和阀值对同一信号去加性噪声效果比较的程序
-Double-spectral and wavelet transform to remove the signal plus Gaussian noise procedures 1. To achieve a single variable pairs of spectral analysis procedures 2. Using Fourier inverse transform procedures for seeking self-correlation function 3. To strike a preference to use fft spectrum , power spectrum, RMS spectrum, several spectra of the procedure 4. read. wav audio signal with wavelet plus a letter to the white noise process 5. with a variety of wavelet and threshold on the same signal to additive noise Comparison program Platform: |
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Author:沈玉杰 |
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Description: A wavelet function can be viewed as a high pass filter, which aproximates a data set (a signal or time series). The result of the wavelet function is the difference between value calculated by the wavelet function and the actual data. The scaling function calculates a smoothed version of the data, which becomes the input for the next iteration of the wavelet function. In the context of filtering, an ideal wavelet/scaling function pair would exactly split the spectrum. For example, if the sampled frequency range is 0 to 1024 Hz, the result of the wavelet function would be signals from 512 to 1025 Hz. The result of the scaling function would be signals from 0 to 511. Platform: |
Size: 271360 |
Author:Amy Liu |
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Description: 小波变换检测信号频谱边缘，利用多尺度小波模极大值法确定信号频谱边缘。-Wavelet transform edge detection of the signal spectrum, using multi-scale wavelet modulus maximum method to determine the edge of the signal spectrum. Platform: |
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Author:刘单 |
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Description: hurst指数
This the source code associated with the web page
http://www.bearcave.com/misl _tech/wavelets/hurst/index.html
There are the following sub-directories in this directory:
hurst
This is the "main" directory, which contains the C++ source code for
the Hurst exponent estimation functions and related tests. The
other directories all support the C++ code in this directory.
stat
Statistics functions (linear regression, autocorrelation, standard
deviation, and probability density function calculation)
data
Source code to read files downloaded from finance.yahoo.com, plus
sample market data files
freq
Wavelet spectrum calculation C++ source code
histo
Source code for calculating histograms
include
Wavelet functions-
This is the source code associated with the web page
http://www.bearcave.com/misl/misl_tech/wavelets/hurst/index.html
There are the following sub-directories in this directory:
hurst
This is the "main" directory, which contains the C++ source code for
the Hurst exponent estimation functions and related tests. The
other directories all support the C++ code in this directory.
stat
Statistics functions (linear regression, autocorrelation, standard
deviation, and probability density function calculation)
data
Source code to read files downloaded from finance.yahoo.com, plus
sample market data files
freq
Wavelet spectrum calculation C++ source code
histo
Source code for calculating histograms
include
Wavelet functions Platform: |
Size: 490496 |
Author:hyj |
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Description: 利用小波变化对信号的边缘进行检测，方法使通过多尺度积对信号功率谱进行变化-Changes in the signal using the wavelet edge detection method to plot the signal through the multi-scale changes in the power spectrum Platform: |
Size: 1024 |
Author:子龙 |
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Search - wavelet spectrum