网站首页

登录

wavelet_denosiy

于 2019-12-18 发布

 0  233

下载积分: 1 下载次数: 6

我要下载

代码说明：

说明： Donoho提出的小波阀值去噪的基本思想是将信号通过小波变换（采用Mallat算法）后，信号产生的小波系数含有信号的重要信息，将信号经小波分解后小波系数较大，噪声的小波系数较小，并且噪声的小波系数要小于信号的小波系数，通过选取一个合适的阀值，大于阀值的小波系数被认为是有信号产生的，应予以保留，小于阀值的则认为是噪声产生的，置为零从而达到去噪的目的。尺度不变特征变换（Scale-invariant feature transform，SIFT），是用于图像处理领域的一种描述。这种描述具有尺度不变性，可在图像中检测出关键点。(The basic idea of wavelet threshold de-noising proposed by Donoho is that the wavelet coefficients generated by the signal after passing through the wavelet transform (Mallat algorithm) contain the important information of the signal. After the wavelet decomposition, the wavelet coefficients of the signal are larger, the wavelet coefficients of the noise are smaller, and the wavelet coefficients of the noise are smaller than the wavelet coefficients of the signal. By selecting a suitable threshold, the wavelet coefficients of the noise are larger than the valve The wavelet coefficients of values are considered to be generated by signals, which should be preserved. The ones less than the threshold are considered to be generated by noise, which is set to zero to achieve the purpose of denoising.)

文件列表：

lena.jpg, 47132 , 2018-11-08
wavelet_denosiy.m, 953 , 2019-12-18

下载说明：请别用迅雷下载，失败请重下，重下不扣分！

发表评论

0 个回复

gui_serial
说明：通过定义全局变量实现simulink与gui的实时数据互通用以电网仿真(By defining global variables Real time data communication between Simulink and GUI For power grid simulation)

2020-03-26 14:15:14下载

积分：1
RGBImage
利用双线性插值和最近邻插值实现RGB图像的缩放，利用MATLAB编写(The use of bilinear interpolation and nearest neighbor interpolation to achieve RGB image scaling, using MATLAB to prepare)

2009-10-31 19:29:03下载

积分：1
Hilbert_CG
采用预处理的CG算法求解Hilbert矩阵，求解1000阶及以上的方程组。预处理矩阵分别采用3对角线、5对角线以及在对角线上分割小块矩阵的矩阵。可以任意设置收敛精度，简单实用。(CG algorithm for solving Hilbert matrix preconditioning, 1000 order and above solving equations. Diagonal matrix were pretreated with 3, 5 and in the diagonal matrix, the diagonal matrix of divided pieces. Can be set convergence precision, simple and practical.)

2014-11-22 15:30:04下载

积分：1
unwrapfile
说明：用于相位解缠，提供好的解缠方法和解缠效果，能够更好的得到真实值(For phase unwrapping, unwrapping methods provide good wrapped around the effect of reconciliation that can better be the true value)

2008-11-04 14:14:36下载

积分：1
TheuseandyanjiuofAdaptivefilter
该文档是自适应信号处理研究的一篇研究生毕业论文，介绍了自适应的几种常见算法，如LMS，NLMS等等，并在最后有相关的MATLAB程序（LMS程序自适应滤波器，陷波器，分离器等程序）可以作为自适应信号处理初学者的参考资料(This document is an adaptive signal processing graduate thesis introduces several common adaptive algorithms, such as LMS, NLMS, etc., and the final program has an associated MATLAB (LMS process adaptive filter, notch , splitters and other procedures) can be used as a reference adaptive signal processing information for beginners)

2010-11-12 10:07:56下载

积分：1
SAR-image-registration
matching algorithm based on SIFT algorithm, extract feature points in use of Harris corner detection algorithm

2012-12-23 14:17:17下载

积分：1
变化检测
说明：利用遥感做变化检测的时候可以用到的数据。(Data Used in Change Detection Using Remote Sensing)

2020-11-05 11:29:50下载

积分：1
imnoise2
使用规定分布生成空间随机噪声，可以选择噪声类型和参数。(Using the prescribed distribution to generate spatial random noise, we can choose noise types and parameters.)

2018-04-16 10:13:34下载

积分：1
LDA-based-face-recognition
基于LDA的人脸识别技术，从ORL数据库读数据，然后从中取一部分进行训练，一部分进行测试。(This code is LDA base face recognition programme. It reads nots faces from ORL database and the rest (noc-nots) are used as test. LDA_Performance shows the recognition performance. )

2009-03-25 16:39:23下载

积分：1
denoising
压缩包展示了对含高斯噪声和椒盐噪声图片去噪处理的基本去噪演示，包括均值滤波、中值滤波、维纳滤波、小波滤波。希望可以对初学的朋友有所帮助。(Basic denoising with Gaussian noise and salt and pepper noise image denoising demo, including mean filter, median filtering, Wiener filtering, wavelet filter)

2013-04-20 14:34:18下载

积分：1

696516资源总数
106914会员总数
0今日下载