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erwei
基于matlab实现对二维信号的分解与重构,在信号处理中有相当的使用价值。(Matlab based on the realization of two-dimensional signal decomposition and reconstruction, in signal processing have considerable value.)
- 2009-04-25 21:54:09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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yyuyutrtete
文件中为关于MATLAB的界面设计程序,具体内容如下:曲线转换按钮,栅格控制按钮,编辑框的使用,弹出式菜单,编辑框的使用,滑标的使用,多选菜单,菜单控制的使用,UIMENU菜单的应用,等等.很有使用价值(documents for MATLAB on the interface design process, as follows : curve conversion button, Grid control button, edit box use, pop-up menus, edit box use, the subject of the use of sliding more election menu menu to control the use of UIMENU menu, and so on. very useful)
- 2007-06-12 20:14:04下载
- 积分:1
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minconPS
处理带有约束条件的matlab程序,很重要,能用(Dealing with the constraints of the matlab program, it is important, can use)
- 2011-11-29 20:08:09下载
- 积分:1
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clc
一个MUSIC算法的MATLAB实例,大家可以在此基础上进行适应性修改(MUSIC algorithm MATLAB instance, we can adapt based on)
- 2013-03-31 23:50:14下载
- 积分:1
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main2
变分贝叶斯方法进行压缩感知中的稀疏信号的重构(Variational Bayesian method for CS reconstruction)
- 2016-01-14 17:17:30下载
- 积分:1
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Current_PID
电路控制系统仿真,PID控制moshi,matlab(Circuit control system simulation, PID control moshi, matlab)
- 2010-09-03 10:21:40下载
- 积分:1
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TeZhengTiQU
说明: 基于Matlab编写的手写字符特征提取代码(Matlab-based feature extraction handwritten character written in the code)
- 2010-04-14 10:24:57下载
- 积分:1
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PID
说明: 先进PID控制及其matlab仿真——配套程序(Advanced PID Control and matlab simulation- complete program)
- 2011-04-12 16:38:36下载
- 积分:1
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Intelligent-Fault-Diagnosis-
Intelligent Fault Diagnosis and Prognosis for Engineering Systems
- 2013-09-02 18:36:40下载
- 积分:1