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二维小波变换
- 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
erweixiaobobianhuan
- 此示意程序用DWT实现二维小波变换 1.调原始图像矩阵 2.进行二维小波分解 3.分解结果显示 重构源图像及结果显示
Wavelet2D
- 二维小波变换源代码,可以实现多级分解,手动选择级数以及滤波器长度
matlabcode
- 图象增强 小波变换将一幅图象分解为大小、位置和方向都不同的分量。在做逆变换之前可以改变小波变换域中某些系数的大小,这样就能够洋选择的放大所感兴趣的分量而减小不需要的分量。 给定一个图象信号,用二维小波分析对图象进行增强处理。
appcoef2
- 二维小波分解,可以将图像进行多维分解,从而进一步对图像进行更好的审查,然后解决压缩或者重构的问题
test4_wavelet_DIPUM.rar
- 用二维小波包分解得到水平垂直细节系数,据此组合合成图像的边缘,并与传统算子方法对比,Two-dimensional wavelet packet decomposition has been the level of vertical detail coefficient, which images the edge of combinatorial chemistry and operator with the traditional methods
WaveletTransform
- 利用二维小波分析对一幅图象作2层小波分解,并在此基础上提取各层的低频信息实现图像的压缩.-The use of two-dimensional wavelet analysis of images for a 2-layer wavelet decomposition, and on this basis the low-frequency information extracted all levels to achieve image compression.
DWT1D
- 一维正交小波变换(二进小波变换)包括分解与重构-this program compute the one-dimensional orthogonormal wavelets transform of the signal in a data file and reconstruct the original signal from its wavelet decomposition using the Mallat s pyramidal algorithm.
Matlab_wavelet
- 掌握小波分析在图像分析等各方面的应用。对图像进行二维离散小波分解、多尺度二维离散小波分解 并提取二维小波分解的高频系数和低频系数, 画出原始图形并显示分解结果。-Master the application of wavelet analysis in image analysis and other applications. Image two-dimensional discrete wavelet decomposition, multi-scale two-dimensiona
Decomposition_Reconstruction_by_wavelet
- 二维图象的小波分解和重构程序,可用于图象处理和数字水印等。-Two-dimensional images of the wavelet decomposition and reconstruction procedure can be used for image processing and digital watermarking, such as.
tool_image_6
- 基于fft和二进小波编写的二维小波多孔算法图像分解,效果不错-Fft and based on dyadic wavelet algorithm for the preparation of porous two-dimensional wavelet image decomposition, good results
DWT_2D
- 本程序用DWT实现二维小波变换,进行二维小波分解并显示分解结果。-Mallat algorithm for 2-D wavelet transform. M-file Download
watermark
- 对256*256的图进行二维小波分解,找出中频带64*64CH2嵌入水印,-256* 256 for a two-dimensional wavelet decomposition of the graph, find the band 64* 64CH2 embedded watermark,
wfb2rec
- 对进行二维小波分解后的图像,进行小波重构-Two-dimensional wavelet decomposition of the image, the wavelet reconstruction
erweixiaobobianhuan
- 对图片实现二维小波分解,并且重建出原始图片,可以编译。-Picture the two-dimensional wavelet decomposition and reconstruction of the original picture, you can compile.
OpenCV_wavelet
- 借助OpenCV,实现图形的二维小波分解功能。-With OpenCV, to achieve a two-dimensional wavelet decomposition graphics capabilities.
haar-wavelet
- haar二维小波分解,输出四个分解系数子矩阵.将系数重构,得到最终的输出矩阵-haar two dimension wavelet decompositon
具体小波变换函数
- 对二维信号X(m,n)进行离散小波变换,注:m、n均为偶数,可以计算低频部分,垂直方向,水平方向和对角线方向的小波分解系数
Wavelet_Decomposition_For_Images
- 小波算法,用于小波分析,数据,图像等。一维,二维数据的小波分解。(Wavelet algorithm is used for wavelet analysis, data, images and so on. Wavelet decomposition of one dimensional and two dimensional data.)
二维离散小波变换
- mallatm.m:一维mallat快速分解函数 mallatr.m:一维mallat快速重建函数 mallatm2d.m:二维mallat快速分解与合成算法的演示函数,要调用mallatm.m与mallatr.m 在matlab命令行键入(Two dimensional discrete wavelet transform)