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map
数学建模中可能会用到的有关计算机中图的概念的一些程序(Some programs may use the computer in the concept of mathematical modeling)
- 2013-03-21 18:01:44下载
- 积分:1
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k-meansClustering
这里的k-means聚类,是事先给出原始数据所含的类数,然后将含有相似特征的数据聚为一个类中。(Where k-means clustering, is given in advance the number of classes contained in the original data, then the data contained similar characteristics grouped into a single class.)
- 2015-01-15 15:22:59下载
- 积分:1
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zhiqufengji_MPPT
一种直驱风机寻找最大功率点的模型,可以用来分析学习原理。(This is looking for a direct-drive model s the maximum power point,that can be used to analyze or learning principles.)
- 2015-03-28 13:24:43下载
- 积分:1
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jingfui_v36
直线阵采用切比学夫加权控制主旁瓣比,做视觉测量的上位机代码,小波包分析提取振动信号中的特征频率。( Linear array using cut than learning laid upon the right control of the main sidelobe ratio, Do Vision Measurement PC code, Wavelet packet analysis to extract vibration signal characteristic frequency.)
- 2016-04-27 23:10:01下载
- 积分:1
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disturbance-observation
光伏发电系统最大功率跟踪方法中,扰动观察法的S函数(
光伏发电系统最大功率跟踪方法中,扰动观察法的S函数
The maximum power tracking method of photovoltaic generation system, the S function of the disturbance observation method)
- 2016-11-18 11:33:19下载
- 积分:1
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MahonyPapers
Kalman Filtering and theory using Matlab
- 2011-01-14 02:48:03下载
- 积分:1
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main
最大熵方法 最小方差以及MUSIC算法对信号DOA进行估计,分别对相干信源和独立信源进行仿真效果分析(Maximum entropy method and the MUSIC algorithm for minimum variance to estimate the signal DOA, respectively, of coherent sources and independent sources for analysis of simulation results)
- 2011-02-01 12:48:57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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PLL
说明: 利用锁相环,比较好的实现了载波同步。。。(PLL)
- 2010-04-10 18:08:19下载
- 积分:1
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MATLAB6_5
说明: matlab教程,查询一些命令,使用方法,例子,可以用来仿真,实验等(matlab tutorial, query a number of commands, use, examples, can be used to simulate experiments)
- 2010-04-16 21:02:39下载
- 积分:1