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Bayes
贝叶斯分类器,基于最小错误率的贝叶斯分类器(Bayes)
- 2010-08-15 10:20:42下载
- 积分:1
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ABCD
an example of ABCD matrix
- 2009-06-25 14:15:59下载
- 积分:1
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Periodogram_Estimate
说明: 用MATLAB进行的功率谱估计,通过几种方法的比较进行对比分析各种方法的优缺点(Carried out using MATLAB power spectrum estimation, by comparison of several methods to compare the advantages and disadvantages of various methods)
- 2011-03-14 10:46:08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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matlab-gear--procedure
matlab齿轮设计程序,直齿轮,角变位齿轮
(matlab gear procedure )
- 2013-03-19 23:22:01下载
- 积分:1
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paper5
Spectral Efficiency in Large-Scale MIMO-OFDM Systems with Per-Antenna Power Cost
- 2015-03-02 20:05:53下载
- 积分:1
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chap15
人脸识别中核心算法的MATLAB软件实现例程(The core algorithm of face recognition in MATLAB)
- 2013-11-30 10:43:17下载
- 积分:1
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Untitled23
三次样条插值法,图像的块操作,图形的过滤操作(In the same coordinate, can draw three concentric circles, and coordinate control.)
- 2015-04-13 21:04:24下载
- 积分:1
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ch(2)-page(67)-ex(9)-descriptive-solution
dudu and hart chapter 2 excersise
- 2014-02-24 15:55:12下载
- 积分:1
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yibudianjiqidong
异步电机的启动,本人亲自编写,并且经过自己的验证,绝对可信(Start asynchronous motors, I personally prepared, and after their verification, absolutely credible)
- 2014-03-14 20:54:15下载
- 积分:1