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DWT

于 2012-06-01 发布 文件大小:53KB
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  基于小波变换的数字盲水印及对嵌入水印后图像的攻击检测(Attack detection based on wavelet transform digital blind watermark and the watermarked image)

文件列表:

DWT
...\coef2mat.m,285,2011-10-30
...\coefmodify.m,317,2011-10-30
...\experiment5_1.m,2407,2012-04-14
...\imgscram.m,341,2012-04-07
...\imgscraminv.m,378,2011-10-29

...\watermark.jpg

...\wmembed.m,916,2012-04-07
...\wmextract.m,377,2012-04-14

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  • quzao
    主要是用于心电信号的去噪,对于噪声下的微弱电信号的一种提取(For ECG denoising, extract a weak signal in the noise)
    2012-05-16 11:43:35下载
    积分:1
  • raj
    this is mat lab wavelet paper
    2009-10-27 13:45:04下载
    积分:1
  • XcorrGauss
    生成高斯波形脉冲,并求解高斯脉冲的自相关结果(Gaussian pulse waveform is generated, and solve the results of Gaussian pulse autocorrelation)
    2021-02-07 10:49:55下载
    积分:1
  • phase
    希尔伯特变换和小波变换检测相位差的matlab程序和一些资料(Hilbert transform and wavelet transform to detect the phase difference matlab program and some of the information)
    2012-10-20 19:46:59下载
    积分:1
  • Matlab 梳状滤器程序
    心电图(ECG)是临床上诊断心血管疾病的重要方法。 数字滤波作为数字信号处理技术的重要组成部分,广泛应用于诸如信号分离、恢复、整形等多种场合中。为了使信号不失真及在可编程逻辑器件中容易实现,采用具有严格线性相位特性的FIR滤波器进行低通滤波(0-150Hz),用整系数梳状滤波器来去工频干扰及基线漂移,从而达到对心电信号进行预处理的目的。(Electrocardiogram (ECG) is an important method for clinical diagnosis of cardiovascular diseases. As an important part of digital signal processing technology, digital filtering is widely applied to many occasions, such as signal separation, recovery, shaping and so on. In order to make the signal undistorted and easy to be realized in programmable logic device, the FIR filter with strict linear phase characteristics is used for low pass filtering (0-150Hz), and the entire coefficient comb filter is used to get the interference of the power frequency and the baseline drift, thus the purpose of preprocessing the ECG signal is achieved.)
    2018-04-06 19:05:57下载
    积分:1
  • Matlabwavelet
    第二代小波变换,包含常见的小波基函数和算例(The second generation wavelet transform contains the common wavelet basis functions and examples)
    2017-03-28 09:59:22下载
    积分:1
  • Wavelet-dec--rec
    在理解了离散小波变换的基本原理和算法的基础上,通过设计VC程序对简单的一维信 号在加上了高斯白噪声之后进行Daubechies小波、Morlet小波和Haar小波变换,从而得到小波分解系数;再通过改变分解得到的各层高频系数进行信号的小波重构达到消噪的目的。在这一程序实现的过程中能直观地理解信号小波分解重构的过程和在信号消噪中的重要作用,以及在对各层高频系数进行权重处理时系数的选取对信号消噪效果的影响。(In understanding the basis of discrete wavelet transform basic principles and algorithms, through the design VC program Daubechies wavelet, Morlet wavelet and Haar wavelet transform after a simple one-dimensional signal plus a Gaussian white noise, resulting wavelet coefficients wavelet reconstruction signal again by changing the layers to achieve high-frequency coefficients decomposed noise cancellation purposes. Can intuitively understand wavelet decomposition and reconstruction process and an important role in signal de-noising in the process of implementation of this program, and in the high-frequency coefficients when the weight of the layers selected for signal processing coefficients denoising affected.)
    2014-07-10 18:16:49下载
    积分:1
  • xiaobobianhuan
    基于小波变换方法的去雾源代码图像复原代码(Wavelet-based approach to image restoration fog source code)
    2021-04-21 17:28:49下载
    积分:1
  • wave-move
    描述电磁波(电场或磁场)在自由空间传播的Matlab程序。(Description of electromagnetic waves (electric or magnetic) in free-space propagation of Matlab procedures.)
    2020-11-03 09:39:52下载
    积分:1
  • EWT20130617
    由加州理工大学教授开发的经验小波变换算法程序包,经检验比小波效果更好(California Institute of Technology developed by Professor experiences wavelet transform algorithm package, the test better than wavelet effect)
    2016-07-30 14:41:42下载
    积分:1
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