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imputation.tar
一个很有用的EM算法程序包，可用于混合高斯模型，值得一看哦(A useful package of the EM algorithm can be used in mixed-Gaussian model, see Oh)
- 2008-03-21 21:54:53下载
- 积分：1
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sift
1 SIFT 发展历程
SIFT算法由D.G.Lowe 1999年提出，2004年完善总结。后来Y.Ke将其描述子部分用PCA代替直方图的方式，对其进行改进。
2 SIFT 主要思想
SIFT算法是一种提取局部特征的算法，在尺度空间寻找极值点，提取位置，尺度，旋转不变量。
3 SIFT算法的主要特点：
a) SIFT特征是图像的局部特征，其对旋转、尺度缩放、亮度变化保持不变性，对视角变化、仿射变换、噪声也保持一定程度的稳定性。
b) 独特性(Distinctiveness)好，信息量丰富，适用于在海量特征数据库中进行快速、准确的匹配[23]。
c) 多量性，即使少数的几个物体也可以产生大量SIFT特征向量。
d) 高速性，经优化的SIFT匹配算法甚至可以达到实时的要求。
e) 可扩展性，可以很方便的与其他形式的特征向量进行联合。
4 SIFT算法步骤：
1） 检测尺度空间极值点
2） 精确定位极值点
3） 为每个关键点指定方向参数
4） 关键点描述子的生成
本包内容为sift算法matlab源码(1 SIFT course of development
SIFT algorithm by DGLowe in 1999, the perfect summary of 2004. Later Y.Ke its description of the sub-part of the histogram with PCA instead of its improvement.
2 the SIFT main idea
The SIFT algorithm is an algorithm to extract local features in scale space to find the extreme point of the extraction location, scale, rotation invariant.
3 the main features of the SIFT algorithm:
a) SIFT feature is the local characteristics of the image, zoom, rotate, scale, brightness change to maintain invariance, the perspective changes, affine transformation, the noise also maintain a certain degree of stability.
b) unique (Distinctiveness), informative, and mass characteristics database for fast, accurate matching [23].
c) large amounts, even if a handful of objects can also produce a large number of SIFT feature vectors.
d) high-speed and optimized SIFT matching algorithm can even achieve real-time requirements.
e) The scalability can be very convenient fe)
- 2012-05-25 15:31:16下载
- 积分：1
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stft4
对于持续时间为500s的两个LFM信号，其初始频率分别为0.1Hz、0.3Hz，中止频率分别为0.3Hz、0.1Hz，在不含噪声和含有噪声（ ）的情况下，仿真(for the duration of the two 500s LFM, the initial frequency of 0.1Hz. 0.3Hz, suspension frequencies of 0.3Hz, 0.1Hz. In noise-free and noisy () cases, the simulation)
- 2007-06-08 22:25:31下载
- 积分：1
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uelim
matlab矩阵计算 消元法解上三角方程组(the matlab matrix calculation elimination method to solve the trigonometric group)
- 2013-04-02 11:07:08下载
- 积分：1
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Vocab
This is source code vocal by ica.
- 2009-03-19 05:02:26下载
- 积分：1
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example3_12
说明： matlab 实现 付费通变换 抽取的另一种算法(matlab FFT transform taken to achieve an alternative algorithm for)
- 2009-09-03 13:11:54下载
- 积分：1
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MATLAB
有关有限元的基本理论与matlab的编程，是浙大徐荣桥老师编写的研究生教材。(For the basic theory and finite element matlab programming, Xu Rong bridge is Zhejiang University graduate teacher preparation materials.)
- 2011-10-09 23:14:16下载
- 积分：1
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1
说明： 信息理论与编码——关于线性分组码编码与译码的matlab仿真程序(Information Theory and Coding- on the linear block code encoding and decoding matlab simulation program)
- 2008-05-12 05:42:21下载
- 积分：1
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IDW
基于距离权重反比法的空间插值程序，程序比较好读懂，，简单(Method based on inverse distance weighted spatial interpolation procedure, the program is better read, and simple)
- 2011-09-11 01:26:26下载
- 积分：1
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Code1
3.Bifurcation analysis
Bifurcation analysis has to be done for finding the different eigen values. eigen value plot has to be made for understanding the movement of the eigen values stable to unstable region to understand the stability of the system according to the change in system parameters.Bifurcation analysis has to be done for a 9-bus ,39 bus ,14bus,30 bus system with and without connecting squirrel cage induction generator to the system. single turbine generator has to be considered first and after that a wind farm with more than 10 turbine generators has to be connected
- 2014-09-27 15:13:50下载
- 积分：1
