Welcome![Sign In][Sign Up]
Location:
Search - matlab hilbert

Search list

[Other resourcehht_toolbox

Description: 基于matlab的Hilbert-Huang变换完版程序-based on Matlab Hilbert-Huang Transform End version of procedures
Platform: | Size: 374825 | Author: 陈力 | Hits:

[Other resourceHilbert

Description: matlab中的Hilbert变换,主要处理csv文件。
Platform: | Size: 1279 | Author: yhm | Hits:

[Other resourcematlab

Description: 控制流语句if-else-end,并且用学生成绩举例,创建Hilbert矩阵,n阶魔方矩阵,编写一个M函数文件
Platform: | Size: 3560 | Author: 王斌斌 | Hits:

[matlabMATLAB 图像保密通信技术之Arnold变换

Description: 图像保密通信技术之Arnold变换 一、作业目的 1.利用Matlab实现数字图像Arnold变换的置乱及恢复。 2.深入学习通讯保密技术,进一步了解图像保密通讯技术。 3.向大家展示实现图像保密技术的方法和技术。 二、作业介绍 近年来,随着网络带宽和速度的极大提高,多媒体数据特别是数字图像的流传和使用越来越广。而人们对安全性和隐私的也愈发关注,图像加解密技术得到了极快地发展。在机要、军事、政府、金融和私人通信中,数字图像所占的比例越来越大,它所承载的信息的安全成为当前人们关心的焦点。如何确保基于网络的图像/视频信息的安全,是当前信息处理技术领域的亟待解决的难点和研究热点之。本次作业主要研究Matlab实现数字图像Arnold变换的置乱及恢复。 置乱技术是一种图像加密技术,它利用数字图像具有的数字阵列的特点,搅乱图像中像素的位置或颜色使之变成一幅杂乱无章的图像,从而达到无法辨认出原图像的目的,可用于数字图像水印的预处理和后处理过程。置乱过程不仅可以在数字图像的空间域上进行,还可以在其频率域上进行。常见置乱方法有Arnold变换、幻方变换、Hilbert曲线、Conway游戏、广义Gray码变换、仿射变换、正交拉丁方变换等。
Platform: | Size: 635904 | Author: snraderikimo@yahoo.com.tw | Hits:

[SourceCodeHilbert-Huang希尔伯特黄变换(HHT)的Matlab实现

Description: 代码中的plot_hht函数实现了Hilbert-Huang变换(HHT),HHT就是Hilbert-Huang Transform(希尔伯特黄变换),美国航天航空局黄鳄教授发明的,大概的过程是:先对信号进行经验模态分解(Empirical mode decomposition -EMD),得出本征模态函数(IMF intrinsic mode function),再对本征模态函数进行希尔伯特变换,从而过进一步得该信号的希尔伯特谱、时频能量谱等,以便对信号进行分析,据介绍对非线性及非平稳信号有较好的分析和处理效果。
Platform: | Size: 1019356 | Author: lintianlinfeng | Hits:

[Algorithmjaccobi&GS

Description: jaccobi迭代法和GS迭代法求解线性方程组,并有著名病态对称正定矩阵Hilbert矩阵的生成程序和其不同维数下,求解结果的对比作图-jaccobi iteration and GS iterative method for solving linear equations, and a well-known pathological symmetric positive definite matrix Hilbert matrix formation process and the different dimension, the results of the solution Comparative mapping
Platform: | Size: 13312 | Author: 高兵 | Hits:

[Algorithmmysor

Description: SOR(超松弛)迭代发求解线性方程组问题,带有Hilbert矩阵生成程序和其不同维数下求解的结果对比作图-SOR (Overrelaxation) iteration made for solving linear equations, with Hilbert matrix formation process and the different dimensions of the results evaluated Comparative mapping
Platform: | Size: 12288 | Author: 高兵 | Hits:

[GIS program基于DCT变换的图像编码方法研究

Description: 本文结合DCT变换的特性,利用分形的Peano一hilbert扫描曲线,对基于DCT变换的图像编码方法进行了研究,并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵,不直接作二维DCT变换,而是先进行扫描,使之重排成一维向量,再进行一维DCT变换,这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法,并在扫描编码过程中,按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”,而且可以加快编码速度。-this paper the characteristics of DCT, using fractal Peano a Hilbert scanning curve, the DCT-based image coding method for the study and improvement of methods. The work is divided into two main parts : First, the DCT block on the basis of improvements. Right after block production of the image block matrix, not for direct two-dimensional DCT, but first scan, so they line up in a heavy-dimensional vector and then a peacekeeping DCT, thus reducing the amount of computation. Secondly, the level of cosine transform coding some of the improvements. The use level of DCT and zero tree coding combination of methods, coding and scanning process, according to a Hilbert Peano code scanning sequence. This will not only reduce the "blocking effect" but we can speed up the coding speed.
Platform: | Size: 5011456 | Author: lzy | Hits:

[matlabPermutationCode

Description: 图像置乱,图像处理MatLab程序,适合于中高级用户。-images, image processing MatLab procedures, suitable for senior users.
Platform: | Size: 245760 | Author: 汤历 | Hits:

[Mathimatics-Numerical algorithmsemdhht

Description: 经验模式分解的matlab程序 hibert-huang变换,效果挺好的-empirical mode decomposition process hibert Matlab- huang transform, the effect is very good
Platform: | Size: 18432 | Author: 姜浩 | Hits:

[matlabEMD_HHT

Description: 一部分希尔伯特-黄变换(HHT)的经验模式分解(EMD)程序,-part of Hilbert-Huang Transformation (HHT) Empirical Mode Decomposition (EMD) procedures, huh
Platform: | Size: 15360 | Author: 王晓利 | Hits:

[matlabEMD_HHT2

Description: 还是希尔伯特--黄变换的程序,呵呵。hht emd-or Hilbert-- Huang Transform procedures, huh. Hht EMD
Platform: | Size: 3072 | Author: 王晓利 | Hits:

[matlabhilbert_fft.m

Description: matlab实现的hillbert和fft滤波器。适合初学数字信号处理的人学习。-Matlab and achieve hillbert fft filter. Suitable for beginner digital signal processing to emulate.
Platform: | Size: 1024 | Author: 杜猛 | Hits:

[matlabMATLAB

Description: MATLAB希尔伯特Hilbert变换求包络谱用于滚动轴承故障检测,对于滚动轴承故障信号进行包络普分析,确定其故障类型。-MATLAB Hilbert Hilbert transforms envelope spectrum for rolling bearing fault detection, fault signal for Rolling Cape envelope analysis to determine which type of fault.
Platform: | Size: 4298752 | Author: 黄刚劲 | Hits:

[OtherMATLAB希尔伯特Hilbert变换求包络谱源程序代码

Description: 先对信号进行希尔伯特黄变换,可求解Hilbert变换后的包络谱(Hilbert envelope spectrum can be solved)
Platform: | Size: 1024 | Author: 啊哦尽快睡 | Hits:

[matlabMatlab runcode EEMD

Description: 经验模态分解,集合经验模态分解,希尔伯特分解,MATLAB 工具包(Empirical mode decomposition,EEMD, Hilbert decomposition, MATLAB Toolkit)
Platform: | Size: 198656 | Author: Kaiser001 | Hits:

[matlabhilbert

Description: matlab 信号时频分析,结果三维显示(signals Time frequency analysis of MATLAB and 3D display of results)
Platform: | Size: 6084608 | Author: fpzhang520 | Hits:

[OtherMATLAB希尔伯特Hilbert变换求包络谱 源程序代码

Description: 将调制信号通过Hilbert变换,解调出低频信号(Demodulating the low frequency signal through the modulation signal through the Hilbert transform)
Platform: | Size: 3072 | Author: 落日海湾 | Hits:

[matlabHHT变换的三种方法 Matlab

Description: 里面包含了希尔伯特黄变换的三种方法,还有相关的文献资料说明,能够有助于理解希尔伯特黄变换。(It contains three methods of Hilbert Huang transform, and related literature, which can help to understand Hilbert Huang transform.)
Platform: | Size: 12150784 | Author: 迷糊小小 | Hits:

[matlabhilberttest

Description: 此例程可以用来进行希尔伯特变换,得到包络谱,利用差分公式得到瞬时频率(This routine can be used to carry out Hilbert transform, obtain envelope spectrum, and obtain instantaneous frequency by using difference formula)
Platform: | Size: 2048 | Author: 花和七 | Hits:
« 1 2 34 5 6 7 8 9 10 ... 14 »

CodeBus www.codebus.net