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EFG
此程序代码是用matlab编写的无网格伽辽金方法源程序(This code is to use matlab meshless galerkin method source program)
- 2011-11-03 21:30:43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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two_level_FOC
针对异步电动机转子磁链定向的矢量控制系统，逆变部分采用的三电平拓扑结构，算法是采用的传统的SVPWM调制方法。(For the vector control system of induction motor rotor flux orientation, the three level topology is adopted in the inverter, and the algorithm is the traditional SVPWM modulation method.)
- 2016-12-29 19:46:49下载
- 积分：1
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singlepoint
说明： 实现gps单点定位，采用matlab实现了GPS单点定位，包括读Ｎ文件、O文件，定位解算，坐标转换等。-(Matlab achieved using GPS single point positioning, including the reading of N documents, O file, locate solver, coordinate conversion.)
- 2011-03-14 22:45:48下载
- 积分：1
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penniu
可以实现模式识别领域的数据的分类及回归，wolf 方法计算李雅普诺夫指数,图像的光流法计算的matlab程序。( You can achieve data classification and regression pattern recognition, wolf calculated Lyapunov exponent, Image optical flow calculation matlab program.)
- 2017-01-16 13:58:16下载
- 积分：1
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findiff
matlab求解两点边值问题的常微分方程组。追赶法求解。(chasing method for solving ODE bvps)
- 2013-11-02 00:03:25下载
- 积分：1
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matlab_learning_2nd_ed
Matlab Learning in Persian
- 2015-01-16 16:35:06下载
- 积分：1
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quickIntroFlowControl
Flow Control in Matlab
- 2012-11-28 16:26:48下载
- 积分：1
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m8
chopper c simulink with matlab mm mm mm
- 2013-05-07 23:19:40下载
- 积分：1
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rossler
说明： 对于Rossler方程组这样的非线形微分方程组，不可能求得其解析解，利用MATLAB可以用数值解法进行模拟。(Rossler equations for the non-linear differential equations, it is impossible to seek its analytic solution, using MATLAB method can be used for numerical simulation.)
- 2006-04-23 16:09:46下载
- 积分：1
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