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xiaobofenxijiangyi
说明: 小波(Wavelet)这一术语,顾名思义,“小波”就是小的波形。所谓“小”是指它具有衰减性;而称之为“波”则是指它的波动性,其振幅正负相间的震荡形式。与Fourier变换相比,小波变换是时间(空间)频率的局部化分析,它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。有人把小波变换称为“数学显微镜”。
这套讲义生动详实的快速带领初学者掌握小波的基本要点,是不可多得的好材料!(This is a handbook about Wavelet.)
- 2009-09-02 15:44:17下载
- 积分:1
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feichouyangswt
非抽样小波变换的程序,可以自己更改使用,去噪效果较好(
UWT s program, you can change the use of their own, better de-noising)
- 2015-01-26 10:39:24下载
- 积分:1
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beamforming_SL4
利用CVX进行优化,得到期望加权矢量,从而的得到需要的波束形成(CVX using optimized to give the desired beamforming)
- 2020-07-01 09:20:07下载
- 积分:1
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MedCosmCGHMaker_13
数字全息和计算程式
计算全息图的制作和再现过程主要分为以下几个步骤:
1抽样。得到物体或波面在离散样点上的值。
2.计算。计算物光波在全息平面上的光场分布。
3.编码。把全息平面上光波的复振幅分布编码成全息图的透过率变化。
4.成图。在计算机控制下,将全息图的透过率变化在成图设备上成图。如果成图设备分辨率不够,再经光学缩版得到实用的全息图。
5.再现。这—步骤在本质上与光学全息图的再现没有区别。
(Digital Holography and CGH for calculating the production and reproduction process is divided into the following steps: 1 sampling. Be objects, or wavefront-like point in the discrete value. 2. Calculated. Calculation of complex light plane in the holographic optical field distribution. 3. Coding. The hologram plane the complex amplitude distribution of light into a hologram coding changes in the transmittance. 4. As Fig. Under the control of the computer, the hologram transmittance change in the mapping device mapping. Mapping equipment, if not resolution, then reduced by the optical version of a hologram to be practical. 5. Reproduction. This is- these in essence a hologram and the optical reproduction is no different.)
- 2009-06-24 00:45:57下载
- 积分:1
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基于整数小波变换的编码
基于提升格式的整数小波变换及其编解码( And its arranges based on the promotion form integer wavelet
transformation decodes )
- 2004-06-23 22:43:57下载
- 积分:1
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predectif-detection-of-defects
Resumé de l’article:
"Early Detection of Fatigue Damage on Rolling Element Bearings Using Adapted Wavelet" par Xavier Chiementin, Fabrice Bolaers, Jean-Paul Dron en franç ais
- 2012-04-10 17:29:32下载
- 积分:1
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nlayer
实现小波包的n层分解与重构,以及简单的输入输出方式(Implementation of wavelet packet decomposition and reconstruction of N layer)
- 2012-04-16 14:10:45下载
- 积分:1
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suanfa
AR过程的线性建模的Burg算法参数估计m文件(Burg method for AR processing)
- 2012-01-18 21:19:12下载
- 积分:1
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图像对比度拉伸源代码
说明: 基于vc++6.0 的图像对比度拉伸操作(vc 6.0 on the image contrast stretching operation)
- 2005-12-05 09:46:10下载
- 积分:1
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wave
Harr小波具有紧支撑、零调和性和优良的正交性等优点,因此选择它作为小波变换的基函数。对采样数据进行4层小波包变换得到16维的特征样本。(Harr wavelet has compact support, zero reconcile and excellent orthogonality, etc., so choose it as the base function of wavelet transform. 4 layers of sampled data wavelet packet transform feature samples 16 dimensions.)
- 2014-09-17 16:25:07下载
- 积分:1