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小波图像一次压缩
此程序能实现基于小波变换的一次图像压缩。(the program can implement once image compressiom by wavelet-based transform
)
- 2005-09-01 23:00:24下载
- 积分:1
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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
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lwt
提升小波变换程序,
%LWT Lifting wavelet decomposition 1-D.
% LWT performs a 1-D lifting wavelet decomposition
% with respect to a particular lifted wavelet that you specify.(lifting wavelet transform procedures% Local Walsh Transform Lifting wavelet decomposition 1-D. % Local Walsh Transform performs a 1-D lifting wavelet decomposition% with respect to a particular lifted wavelet that you specify.)
- 2020-11-19 22:59:42下载
- 积分:1
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DWT_1D
本程序用Mallat算法实现小波变换,方法简答以实现(This program uses the mallat algorithe to implement wavelet transform)
- 2017-11-21 11:42:10下载
- 积分:1
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2-D-DWT
这是二维离散小波变换程序,里面附带程序说明,及实例讲解。(This is a two-dimensional discrete wavelet transform, which comes with the program instructions and examples to explain.)
- 2021-04-28 17:08:43下载
- 积分:1
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cs_wave_ronghe_way3_dec4_test
这是采用小波变换以及压缩感知的理论编写的图像融合程序(This is the wavelet transform and the theory of compressed sensing image fusion program written in)
- 2011-07-22 12:09:40下载
- 积分:1
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untitled
数字基带传输基带信号,指未经调制的信号。这些信号的特征是其频谱从零频或很低频率开始,占据较宽的频带。
基带信号在传输前,必须经过一些处理或者某些变换(如码型变换、波形和频谱变换)才能送入信道中传输。处理或变换的目的是使信号的特性与信道的传输特性相匹配。
数字基带信号是消息代码的波形表示。表示形式有多种,有单极性、双极性波形,归零和非归零波形,差分波形、多电平波形之分,各自有不同的特点。
研究数字基带信号通过加性高斯白噪声信道的传输,并且假设信道除了叠加高斯噪声外,不会对信号产生其他失真。(matlabSimulation(pulse amplitude modulation) modulation signal in AWGN (additive white Gaussian noise AWGN (Additive White Gaussian Noise)) under the channel bit error rate and bit error rate performance, and compared with the theoretical value.)
- 2018-05-08 18:47:36下载
- 积分:1
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小波包分析
说明: 关于小波包分析的图像绘制,小波分析,三次分解,单支重构 故障信号(Image registration algorithms based on piecewise linear interpolators
(spatiotemporal gradients or block matching) are analyzed to
determine subpixel registration accuracy.)
- 2020-04-20 15:44:46下载
- 积分:1
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slantlet
图像多尺度分析,小波变换的进一步发展slantlet变换代码,用matlab编写有使用说明(slantlet code)
- 2020-12-14 15:09:14下载
- 积分:1
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小波变换
说明: 图像小波变换,小波变换(wavelet transform,WT)是一种新的变换分析方法,它继承和发展了短时傅立叶变换局部化的思想,同时又克服了窗口大小不随频率变化等缺点,能够提供一个随频率改变的“时间-频率”窗口,是进行信号时频分析和处理的理想工具。它的主要特点是通过变换能够充分突出问题某些方面的特征,能对时间(空间)频率的局部化分析,通过伸缩平移运算对信号(函数)逐步进行多尺度细化,最终达到高频处时间细分,低频处频率细分,能自动适应时频信号分析的要求,从而可聚焦到信号的任意细节,解决了Fourier变换的困难问题,成为继Fourier变换以来在科学方法上的重大突破。(Image Wavelet Transform)
- 2020-06-18 04:40:01下载
- 积分:1