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具有小波软阈值和硬阈值消除噪声功能的小波阈值消噪程序-Wavelet soft threshold and hard threshold to eliminate noise function wavelet thresholding denoising procedures
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给出了一种递归算法和一种小波变换与递归算法相结合的快速算法.该递推算法只需遍历二维直方图的主对角线和一条次主对角线, 与传统Otsu法的递推算法相比, 搜索空间大为减小。-arecursivealgorithmanda wavelet transfer combining withthe
recursive algorithmare shown.The recursive algorithmonly needsearchthemaindiagonal andone subdiagonal
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基于小波变换的数字图像降噪的源代码,利用改进的小波阈值法进行图像去噪-Digital image noise reduction based on wavelet transform source code, improved wavelet thresholding method for image denoising
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利用小波分析方法,阈值去噪的算法及MATLAB实现的程序-Wavelet analysis method, thresholding algorithm in MATLAB program
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The code is for denoising using wavelet decomposition and reconstruction。 This is the implementation of paper "Efficient Image Denoising Method Based on a New Adaptive wavelet packet thresholding function"
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对设备进行故障诊断的主要方法就是测量故障
设备的振动或噪声, 并对其进行分析, 从而找出故障原因。然而振动或噪声信号中除了对分析故障有用的信息外, 还有大量的噪声成分。只有有效地滤除噪声, 才能获得有用的信息, 从而得到可靠的分析结论。传统的滤噪方法是将被噪声污染的信号通过一个滤波器, 滤掉噪声频率成分。但对于短时瞬态信号、非平稳信号、含宽带噪声的信号, 采用传统处理方法有着明显的局限性。小波变换为信号去噪提供了一种有效的方法, 小波阈值去噪具有传统方法不可比拟的优越性。但是小波分解的频域重
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采用小波分解系数阈值量化方法进行去噪处理的程序-Wavelet coefficients thresholding denoising procedures
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小波三种阈值去噪的方法,硬阈值,软阈值,半软阈值去噪-Three kinds of wavelet thresholding methods, hard threshold, soft threshold, semi-soft thresholding
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基于context的自适应小波阈值去噪程序,可以运行,有关于处理后图像的评价:SNR\PSNR\MSE-Context-based adaptive wavelet thresholding procedure can be run on the processed image evaluation: SNR \ PSNR \ MSE
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本程序是在matlabR2009b平台上编程,主要实现一维离散小波阈值去噪,有63期高程数据,可以直接使用!-This procedure is in matlabR2009b platform programming, the main one-dimensional discrete wavelet thresholding, there are 63 elevation data can be used directly!
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1、 降噪步骤:
(1) 一维信号的小波分解。选择一个小波并确定分解的层次,然后进行分解运算。
(2) 小波分解高频系数的阈值量化。对各个分解尺度下得高频系数选择阈值进行软阈值量化处理。
(3) 一维小波重构。根据小波分解的最底层低频系数和各高频系数进行一维小波重构。
matlab里面有关于去噪的函数,你可以找一下~~
这说的只是基本原理,希望有所帮助-1, noise reduction steps: (1) one-dimensional signal wavelet d
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用matlab实现的去噪的程序,利用小波的知识对图像进行阈值去噪,效果较好。-Denoising using matlab procedures, knowledge of using wavelet thresholding the image is better.
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小波去噪,包括强制去噪,默认阈值去噪和默认软阈值去噪。-Wavelet denoising, including mandatory de-noising, the default thresholding and the default soft thresholding.
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对于原始图像中只含有较少的高频噪声,采用合适的小波分解洗漱阈值量化方法进行去噪-For the original image only contains less high frequency noise, the use of appropriate wash wavelet thresholding denoising method
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一个小波阈值降噪的程序,大部分是调用matlab的函数实现的,初学者可以参考学习一下-A wavelet thresholding denoising procedures, mostly a function call matlab to achieve, beginners can refer to learn about
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Adaptive Wavelet Thresholding for Image Denoising and Compression.pdf
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将三维荧光谱数据绘成三部分:1.激发波长,发射波长与荧光强度的关系;2.对应的指纹图;3.荧光强度分别于发射波长与激发波长的二维关系图。另外利用小波阈值去噪得到的效果,便于观察。-The data is plotted as three-dimensional fluorescence spectra of three parts: an excitation wavelength, emission wavelength and the relationship between fluores
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小波阈值去噪的各种方法研究,包括软硬阈值函数去噪,新的阈值函数去噪-Wavelet thresholding study various methods, including hard and soft threshold function de-noising, the new threshold function de-noising
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小波变换的程序,包括一维变换,二维变换,一维语音信号处理,二维图像处理,软阈值去噪、硬阈值去噪、图像压缩-Wavelet transform procedures, including the one-dimensional transform two-dimensional transform one-dimensional speech signal processing, two-dimensional image processing, soft thresholding, hard t
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经验模态分解(EMD),对imf进行分析,再采用类小波阈值去噪。-Empirical Mode Decomposition (EMD), were analyzed for the imf, then using class wavelet thresholding.
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