Description: 利用矩阵的奇异值分解压缩图像，先将图像分块，对各块中的每个对应象素内积得到相关矩阵A，然后对A进行奇异值分解，选择n（n<N）个较大的特征值对应的特征向量，利用该向量与各块图像内积来压缩和恢复图像-matrix of singular value decomposition image compression, image first block of the block of each pixel corresponding to be associated with the plot matrix A, and then A singular value decomposition, the choice of n (4; N) 000 eigenvalues larger the corresponding eigenvector, the use of the Vector with the block images within the plot to image compression and restoration Platform: |
Size: 1024 |
Author:王志气 |
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Description: 通过奇异值分解实现的最小二乘拟合算法
inear least-squares fit by singular value decomposition-through the singular value decomposition of the least squares fitting algorithm inear least-squares fit by singular value decomposition Platform: |
Size: 1024 |
Author:游江 |
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Description: ％ 奇异值分解 (sigular value decomposition,SVD) 是另一种正交矩阵分解法；SVD是最可靠的分解法，
％ 但是它比QR 分解法要花上近十倍的计算时间。[U,S,V]=svd(A)，其中U和V代表二个相互正交矩阵，
％ 而S代表一对角矩阵。 和QR分解法相同者， 原矩阵A不必为正方矩阵。
％ 使用SVD分解法的用途是解最小平方误差法和数据压缩。用svd分解法解线性方程组，在Quke2中就用这个来计算图形信息，性能相当的好。在计算线性方程组时，一些不能分解的矩阵或者严重病态矩阵的线性方程都能很好的得到解- Singular value decomposition (sigular value decomposition, SVD) is another orthogonal matrix decomposition method SVD decomposition is the most reliable method, but it takes more than QR decomposition near ten times the computing time. [U, S, V] = svd (A), in which U and V on behalf of two mutually orthogonal matrix, and the S on behalf of a diagonal matrix. And QR decomposition are the same, the original matrix A is no need for the square matrix. The use of SVD decomposition method are used as a solution of least squares error method and data compression. Using SVD decomposition solution of linear equations, in Quke2 on to use this information to calculate the graphics performance quite good. In the calculation of linear equations, some indecomposable matrix or serious pathological matrix of linear equations can be a very good solution Platform: |
Size: 3072 |
Author:zhxj |
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Description: 在nvidia G80以上GPU上进行奇异值分解的程序。-GPU in the nvidia G80 and above on the singular value decomposition procedure. Platform: |
Size: 358400 |
Author:樟树 |
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Description: 现代谱估计的matlab的程序。用的是奇异值分解的总体最小二乘法。-Modern Spectral Estimation matlab procedures. Using a singular value decomposition of the total least squares method. Platform: |
Size: 31744 |
Author:yangqiuchen |
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Description: 基于GM算法和QR分解实现的稳健奇异值分解算法，通过该算法可以获取一个数居阵的稳健方差－协方差阵。在该稳健方差－协方差阵上可以进行诸如，稳健主成份分解、稳健聚类、稳健因子分析等操作。-GM based on QR decomposition algorithm and the realization of the stability of singular value decomposition algorithm, the algorithm can be accessed through a number of UN-array sound variance- covariance matrix. In the robust variance- covariance matrix can be carried out, such as, robust principal component decomposition, robust clustering, robust operation, such as factor analysis. Platform: |
Size: 205824 |
Author:徐林林 |
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Description: 利用svd的一种水印方法。SVD即奇异值分解(Singular Value Decomposition)算法。
-A watermarking method using svd. Singular value decomposition SVD that (Singular Value Decomposition) algorithm. Platform: |
Size: 1024 |
Author:jianghaiyang |
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Description: 奇异值分解源程序的一个程序，很不错的一个程序，欢迎使用-Singular value decomposition of a source program, it is a good program, Welcome Platform: |
Size: 9216 |
Author:先生 |
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Description: 该程序是主要描述的是矩阵运算，包括矩阵的基本运算，矩阵的求逆，矩阵的奇异值分解，以及特征值以及特征向量的求解等等。-The program is the main description of the matrix operations, including the basic matrix operations, matrix inverse, matrix singular value decomposition, and the characteristic value and characteristic vector solution and so on. Platform: |
Size: 62464 |
Author:wangli |
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Description: 奇异值分解用于英文文本检索，画出频率矩阵第一奇异值向量和第二奇异值向量的分布图- a fast retrieval algorithm for English texts is proposed. First of all, the English texts are mapped into frequency matrixes of order 26 and the dimensions of texts representation space are reduced through Singular Value Decomposition. Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. Platform: |
Size: 1024 |
Author:gaoshilong |
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Description: 一系列展示图像压缩技术的源代码。包括有：使用块截断编码的图像压缩(Block Truncation)、基于高斯金字塔变换的图像压缩(Gaussian Pyramids)、基于离散余弦变换对图像压缩(Discrete Cosine Transform)、基于奇异值分解(SVD)的图像压缩(Singular Value Decomposition)。给出的代码还可以用于2D图像噪声消除。-Image Compression
A collection of simple routines for image compression using different techniques.
BTCODE:
Image compression Using Block Truncation Coding.
PYRAMID:
Image compression based on Gaussian Pyramids.
DCTCOMPR:
Image compression based on Discrete Cosine Transform.
IMCOMPR:
Image compression based on Singular Value Decomposition.
The given codes can be also used in 2D noise suppression.
Notes:
The function "conv2fft" performs a 2D FFT-based convolution.
Type "help conv2fft" on Matlab command window for more informations. Platform: |
Size: 56320 |
Author:依米 |
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Description: 基于子空间的盲信道估计算法，用的是奇异值的分解Subspace-based blind channel estimation algorithm, using a singular value decomposition -Subspace-based blind channel estimation algorithm, using a singular value decomposition Platform: |
Size: 1024 |
Author:李泽敏 |
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