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matlab
机械工程设计分析M文件 MATLAB MATLAB (MATLAB
MATLAB MATLAB )
- 2010-06-29 10:09:12下载
- 积分:1
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hymxszmnrmzn
黑油模型数值模拟入门指南
市场上有不少关于油藏数值模拟的书,但好像没有类似围棋入门指南那样从基础开始一步
一步介绍的书。我收到不下二十个问油藏数值模拟如何入门的问题。我尝试写一写油藏数值模拟
入门指南,希望对那些刚刚开始进入油藏数值模拟领域的工作者有所帮助(Numerical simulation of black oil model Start Guide on the market, many of reservoir simulation, but it seems there is no similar entry guidelines go as the beginning of step by step from basic introductory book. I have received no less than 20 reservoir simulation asked how the issue of entry. I try to write to write a reservoir simulation Start Guide, I hope for those just beginning to enter the field of reservoir simulation will help workers)
- 2009-06-03 21:24:55下载
- 积分:1
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data_yahoo.m
import Yahoo financial data in matlab
- 2012-03-28 01:51:52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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ApEn_v1
this is very good and important for work with eeg data.
- 2013-08-20 19:55:16下载
- 积分:1
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1
说明: 应用MATLAB编辑的支持向量机的应用程序,能进行预测。(Application of MATLAB support vector machine editing applications, capable of prediction.)
- 2008-04-17 09:39:30下载
- 积分:1
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C-Cdelaytime
说明: 用CC法计算延迟时间和潜入位数的matlab程序(CC method with delay time and the median into the matlab program)
- 2008-09-07 19:43:56下载
- 积分:1
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WT-wden
对MATLABB中给出的信号进行信噪比为4的WDEN小波去噪(The signal SNR the MATLABB given 4 WDEN wavelet denoising)
- 2013-04-12 10:07:31下载
- 积分:1
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twentyfour
在matlab环境下, 随即生成四个数字, 并用这四个数字得出24的游戏。(twentyfour)
- 2009-03-31 00:59:54下载
- 积分:1
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dss_1-0.tar
国外的一个非常不错的图像去噪matlab代码(Abroad, a very good image denoising matlab code)
- 2009-12-16 20:59:28下载
- 积分:1