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Description: 关于二维小波变换的程序 [精华]
说明：此算法重在概念，速度并不是很快。因为FOR循环的缘故。此程序从循环矩阵的观点出发，把圆周卷积和快速幅里叶变换建立了联系。实现了分解和无失真重构。它只做了一层分解，即将256x256图形分解成为64x64的四个图形，避免了使用WKEEP()的困惑。主要思想为用小波滤波器族构造正交阵W,变换写为B=W*A*W ,反变换为：A=W *A*W,这与所有正交变换无异。W为循环正交矩阵，因此可用FFT实现快速运算，难点就在重构矩阵上。若用矩阵概念明确，一个共扼转置可以搞顶。但FFT的使用必须找到与分解序列的关系。-on Wavelet Transform procedures [best] Note : This algorithm important concept is not speed quickly. Because FOR cycle nowadays. This program cycle from the point of view of Matrix, circular convolution and fast Fourier transform is established links. To achieve the decomposition and reconstruction without distortion. It only had one decomposition, 256x256 graphics will be 64x64 decomposition of the four graphics, avoiding the use of WKEEP () confusion. The main idea of using wavelet filter generator orthogonal array W, write to transform B = W * A * W, anti-Transform : A = W * A * W, which is orthogonal transformation all the same. W cycle orthogonal matrix, can be used to achieve rapid FFT computation, on the difficult reconstruction matrix. If a clear matrix concept, a home to a total o
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Size: 3785 |
Author: 罗松溪 |
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Description: 自己定义一个数组，模拟小波和傅立叶分析结果，调用webserice----WSWavelet生成图像-own definition of an array simulation wavelet and Fourier analysis, Call webserice-generated images WSWavelet
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Size: 4124 |
Author: 冰风 |
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Description: 关于二维小波变换的程序 [精华]
说明：此算法重在概念，速度并不是很快。因为FOR循环的缘故。此程序从循环矩阵的观点出发，把圆周卷积和快速幅里叶变换建立了联系。实现了分解和无失真重构。它只做了一层分解，即将256x256图形分解成为64x64的四个图形，避免了使用WKEEP()的困惑。主要思想为用小波滤波器族构造正交阵W,变换写为B=W*A*W ,反变换为：A=W *A*W,这与所有正交变换无异。W为循环正交矩阵，因此可用FFT实现快速运算，难点就在重构矩阵上。若用矩阵概念明确，一个共扼转置可以搞顶。但FFT的使用必须找到与分解序列的关系。-on Wavelet Transform procedures [best] Note : This algorithm important concept is not speed quickly. Because FOR cycle nowadays. This program cycle from the point of view of Matrix, circular convolution and fast Fourier transform is established links. To achieve the decomposition and reconstruction without distortion. It only had one decomposition, 256x256 graphics will be 64x64 decomposition of the four graphics, avoiding the use of WKEEP () confusion. The main idea of using wavelet filter generator orthogonal array W, write to transform B = W* A* W, anti-Transform : A = W* A* W, which is orthogonal transformation all the same. W cycle orthogonal matrix, can be used to achieve rapid FFT computation, on the difficult reconstruction matrix. If a clear matrix concept, a home to a total o
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Size: 3072 |
Author: 罗松溪 |
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Description: 自己定义一个数组，模拟小波和傅立叶分析结果，调用webserice----WSWavelet生成图像-own definition of an array simulation wavelet and Fourier analysis, Call webserice-generated images WSWavelet
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Size: 4096 |
Author: 冰风 |
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Description: 根据小波分析和神经网络原理，参考网上的一些免费源码，以及自己对Bp神经网络的理解，使用飞狐的函数和数组书写-According to wavelet analysis and neural network theory, a number of free online reference source, as well as their understanding of Bp neural network, using a function of flying fox and the array of writing
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Size: 1024 |
Author: 邱琳强 |
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Description: 实现小波数字水印，比较简单
采用量化数组嵌入-The realization of wavelet digital watermarking, is relatively simple to quantify the use of embedded array
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Size: 89088 |
Author: 黄骏 |
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Description: 紧支撑小波基的构造。
以Daubechies小波滤波器系数为例，推导出小波函数及尺度函数，并画出其图像.
void Convolution(double* pShortData, int nShort, double* pLongData, int nLong)
int CalcScaleFunction(double* pOutData)
int CalcWaveletFunction(double* pOutData)
Convolution()不是通用的离散卷积代码，而是简单地实现了后面两个函数需要的离散卷积，它要求输入的前一个数组长度小于后一数组长度，而且卷积结果就直接覆盖存储在后一数组中。CalcScaleFunction()计算尺度函数，CalcWaveletFunction()计算小波函数。
-Compactly supported wavelet bases constructed. To Daubechies wavelet filter coefficients as an example, the derived wavelet function and scaling function, and draw their images. Void Convolution (double* pShortData, int nShort, double* pLongData, int nLong) int CalcScaleFunction (double* pOutData) int CalcWaveletFunction ( double* pOutData) Convolution () instead of generic discrete convolution code, but simply the realization of a function behind the need for two discrete convolution, which requires input before an array length is less than the array length of the latter, but the result of convolution directly covered by the latter is stored in the array. CalcScaleFunction () calculated scaling function, CalcWaveletFunction () calculation of wavelet function.
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Size: 175104 |
Author: zhang |
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Description: Basic wavelet routines for time series (1D), image (2D) and array (3D) analysis. The
code provided here is based on wavelet methodology developed in Percival and Walden (2000)
Gencay, Selcuk and Whitcher (2001) the dual-tree complex wavelet transform (CWT) from
Kingsbury (1999, 2001) as implemented by Selesnick and Hilbert wavelet pairs (Selesnick
2001, 2002). All figures in chapters 4-7 of GSW (2001) are reproducible using this package and
R code available at the book website(s) below.-Basic wavelet routines for time series (1D), image (2D) and array (3D) analysis. The
code provided here is based on wavelet methodology developed in Percival and Walden (2000)
Gencay, Selcuk and Whitcher (2001) the dual-tree complex wavelet transform (CWT) from
Kingsbury (1999, 2001) as implemented by Selesnick and Hilbert wavelet pairs (Selesnick
2001, 2002). All figures in chapters 4-7 of GSW (2001) are reproducible using this package and
R code available at the book website(s) below.
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Size: 1160192 |
Author: Christian Hagglof |
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Description: matlab阵列信号处理工具箱DBT,版本2.20,阵列信号处理必备-Directory stored in the source wavelet coding, including the commonly used wavelet transform procedures for
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Size: 6790144 |
Author: YYJ |
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Description: VLSI Implementation of Discrete Wavelet Transform
using Systolic Array Architecture
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Size: 236544 |
Author: shushant |
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Description: NAME:
bpass
PURPOSE:
Implements a real-space bandpass filter which suppress
pixel noise and long-wavelength image variations while
retaining information of a characteristic size.
CATEGORY:
Image Processing
CALLING SEQUENCE:
res = bpass( image, lnoise, lobject )
INPUTS:
image: The two-dimensional array to be filtered.
lnoise: Characteristic lengthscale of noise in pixels.
Additive noise averaged over this length should
vanish. MAy assume any positive floating value.
lobject: A length in pixels somewhat larger than a typical
object. Must be an odd valued integer.
OUTPUTS:
res: filtered image.
PROCEDURE:
simple wavelet convolution yields spatial bandpass filtering.
NOTES:-NAME:
bpass
PURPOSE:
Implements a real-space bandpass filter which suppress
pixel noise and long-wavelength image variations while
retaining information of a characteristic size.
CATEGORY:
Image Processing
CALLING SEQUENCE:
res = bpass( image, lnoise, lobject )
INPUTS:
image: The two-dimensional array to be filtered.
lnoise: Characteristic lengthscale of noise in pixels.
Additive noise averaged over this length should
vanish. MAy assume any positive floating value.
lobject: A length in pixels somewhat larger than a typical
object. Must be an odd valued integer.
OUTPUTS:
res: filtered image.
PROCEDURE:
simple wavelet convolution yields spatial bandpass filtering.
NOTES:
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Size: 2048 |
Author: santhu |
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Description: 通过调整小波系数的排序过程，用一维数组代替原有的链表结构，改变小波系数的重要性判断依据等措施对原有的SPIHT算法进行改进。-By adjusting the wavelet coefficients of the sorting process, using one-dimensional array instead of the original list structure, the importance of changing the wavelet coefficients and other measures to determine the basis of the original SPIHT algorithm has been improved.
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Size: 356352 |
Author: ll |
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Description: Function to plot the Region of convergence for Suprathreshold stochastic resonance+Translation invariant wavelet packet transform detector for transient signals. Hypotheses:
Ho : x[n] = w[n] i.e. signal absent
H1 : x[n] = s[n] + w[n] i.e. signal present
NOTE :
received1 IS A CELL ARRAY corresponding to signal + noise.
received2 is a CELL ARRAY corresponding to the noise alone.-Function to plot the Region of convergence for Suprathreshold stochastic resonance+Translation invariant wavelet packet transform detector for transient signals. Hypotheses:
Ho : x[n] = w[n] i.e. signal absent
H1 : x[n] = s[n] + w[n] i.e. signal present
NOTE :
received1 IS A CELL ARRAY corresponding to signal + noise.
received2 is a CELL ARRAY corresponding to the noise alone.
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Size: 2048 |
Author: Suresh |
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Description: 2010年最新用小波变换做CFA彩色图像插值的源程序。J. Tian, W. Yu and L. Ma, "Color filter array color reproduction using
cycle-spinning," International Journal of Electronics and Communications,
Vol. 64, No. 6, pp. 584-587, Jun. 2010.-New 2010 CFA to do with the wavelet transform of the source color image interpolation. J. Tian, W. Yu and L. Ma, " Color filter array color reproduction using cycle-spinning," International Journal of Electronics and Communications, Vol. 64, No. 6, pp. 584-587, Jun. 2010.
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Size: 507904 |
Author: 张华 |
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Description: 小波和可编程逻辑阵列的爆震控制Based on Wavelet and knock control programmable logic array-Based on Wavelet and knock control programmable logic array
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Size: 70656 |
Author: liming2233 |
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Description: 利用Gabor滤波器提取图像纹理特征，用于图像分类模式识别-Extract the texture feature using Gabor filter/wavelet. You should first generate cell array G, which is a set of kernels in freq domain, then pass G and the image to the function GABORCONV.
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Size: 3072 |
Author: Ethan |
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Description: 这两个函数是用来转换成记录的数组（即数组中的每个位置是一个子矩阵）小波包树的过程中这两个函数将有助于pogrammers子图像容易-These two functions are used to convert the wavelet packet tree into array of record (i.e. each location in the array is a sub-matrix)... These two function will help the pogrammers for process the sub-images easily
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Size: 6144 |
Author: 李 |
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Description: 本程序源码实现任意偶数大小图像第二代双正交97提升小波变换注1： 使用标准正交方法，对行列使用不同矩阵（与matlab里不同）注2： 为了保证正交，全部边界处理，全部使用循环处理注3： 正交性验验证，将单位位阵带入函数，输出仍是单位阵（matlab不具有此性质）注4： 此程序源码是矩阵实现，所以图像水平分量与垂直分量估计被交换位置注5： 此程序源码实现的是类小波（wavelet 可直接使
-The program source code to achieve any even size image biorthogonal 97 lifting wavelet transform Note 1: Use the standard orthogonal method, the ranks of the use of different matrix (with matlab) Note 2: In order to ensure the orthogonal, all boundary treatment all use the processing cycle Note 3: orthogonality inspection verification, unit-bit array into a function, the output unit matrix (matlab does not have this property) Note 4: This program source code is a matrix realization, so the image horizontal and vertical components estimate the position of being exchanged Note 5: This program source code to achieve class wavelet (wavelet directly to
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Size: 3072 |
Author: academic |
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Description: 用c语言写的db4多尺度小波去噪代码，效仿matlab的方式，将分解后的系数存放在原数组里-Db4 multi-scale wavelet denoising code, c language written emulate matlab manner, the decomposition coefficients stored in the original array
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Size: 201728 |
Author: 袁智超 |
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Description: Weighted acceleration, Combination formula DSmT evidence reasoning calculation function, Phased array antenna pattern (Chebyshev weights).
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Size: 3072 |
Author: pougengsiu
|
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