snmf

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)

预测控制鼻祖文章,纯英文的,写的不错,大家可以(Predictive control article originator, pure English, written well, everyone can)

用MATLAB实现三维实体箭头的绘制，解决了MATLAB不能绘制实体箭头的问题(Draw 3D arrow with MATLAB)

本资料包含kalman滤波算法的基本原理，应用场合以及仿真效果(This information includes the basic principles kalman filtering algorithms, applications, and simulation results)

说明：  利用遗传算法优化10元稀疏天线阵列的单位间距，得到低副瓣的结果(Using genetic algorithm to optimize the unit spacing of 10 element sparse antenna array, the result of low sidelobe is obtained)

初学SAR者非常有用的matlab源代码。(Beginners are very useful SAR matlab source code.)

how to convert degree in matlab

matlab里面的一些简化工具包，便携易带，ncm工具包，还有一些教学演示程序(the matlab toolbox simple!please,if you want to show something,you can use it)

libxl for windows 版本3.6.0 (libxl for windows version 3.6.0)

file for adaptive nonlinear controle ...