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guass
说明： 基于MATLAB，可以方便地产生随机数，均匀分布和高斯分布等 (Based on MATLAB, can easily generate random numbers, uniform distribution and Gaussian distribution)
- 2008-12-04 10:12:30下载
- 积分：1
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DCTlicheng
研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特
性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。
虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分：1
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pdee
求解偏微分方程的matlab实现，运行pdee(An example to solve the PDE)
- 2011-12-10 15:26:16下载
- 积分：1
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RDA
用matlab语言写的RDA(Regularized descriminant analysis)算法,用于模式分类(Matlab language used to write the RDA (Regularized descriminant analysis) algorithm for pattern classification)
- 2007-12-24 21:38:31下载
- 积分：1
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gauss_seidel
matlab编写的Gauss_Seidel迭代算法求解方程组的根
(iterative algorithm matlab prepared Gauss_Seidel root of solving equations)
- 2011-01-18 15:00:58下载
- 积分：1
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junzhi
此代码是输入图像得到原图像的灰度直方图，得到聚类后的直方图和聚类后的图像直方图。(This code is the input image to get gray histogram of original image, get the clustering histogram and cluster after the image histogram.
)
- 2014-09-27 20:13:37下载
- 积分：1
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pml
二维FDTD仿真高斯脉冲在平面内的传播，并且设定了PML边界条件，可以自动生成关于Ez，Hx和Hy的.avi文件，播放脉冲动态传输。(Dimensional FDTD simulation Gaussian pulse propagation in a plane, and set the PML boundary conditions, can automatically generate .avi files on Ez, Hx and Hy, and play dynamic pulse transmission.)
- 2014-11-06 06:52:01下载
- 积分：1
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Lagrangian multiplier method
通过matlab实现拉格朗日乘子法。学习经典优化方法，熟悉matlab语言。(Realize the Lagrangian multiplier method by matlab. Learning classic optimization methods, familiar with matlab language.)
- 2021-04-08 13:19:01下载
- 积分：1
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yangtiaoxiaobo
三次B样条小波分解与重构算法程序，已经测试好了，可以直接使用的，提供给需要的朋友们(Three B-spline wavelet decomposition and reconstruction algorithm program has been tested OK, you can directly use, available to friends in need)
- 2009-12-09 17:19:20下载
- 积分：1
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PCA_face222
主成分分析（PCA)算法是用于简化数据的一种技术,对于某些复杂数据就可应用主成分分析法对其进行简化。
- 2010-06-02 15:41:47下载
- 积分：1
