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matlab_guide
一本matlab精讲的书,与其它讲matlab书的不同之处在于这本书里面所举的应用示例很多。适合初学者(Jing Jiang a matlab book with other books talk about matlab difference is that inside this book many examples cited by the application. Suitable for beginners)
- 2009-12-15 15:44:09下载
- 积分:1
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wuguoqing4
说明: 垂直阵和单点两种辐射噪声测量法的误差比较,吴国清的论文(Two vertical array and a single point of error radiated noise measurements compared to Wu Guoqing papers)
- 2011-03-09 17:59:59下载
- 积分:1
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Example
matlab有限元分析1D杆结构,2D热扩散问题,2D弹性问题,2D梁受力问题(matlab finite element analysis of 1D bar structure, 2D thermal diffusion problem, 2D elasticity problems, 2D Beams problem)
- 2013-07-17 19:29:23下载
- 积分:1
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slidingmodecontrolofPMSM
非均匀气隙永磁同步电机滑模控制,混沌控制(sliding mode control innon-uniform air-gap PMSM)
- 2020-12-11 10:49:17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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asift
Affine Scale Invariant Feature transform..
- 2010-07-26 14:51:40下载
- 积分:1
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collor
说明: collor hist
- 2010-04-04 21:09:46下载
- 积分:1
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cobol-Source
说明: 关于大型机的内容,是cobol语言,大家可以仔细研习(Content on the mainframe is the cobol language, we can carefully study)
- 2011-04-08 22:22:28下载
- 积分:1
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RD_SAR
关于SAR成像算法,比较简单,适合初学者学习使用(On the SAR imaging algorithm is relatively simple for beginners to learn to use)
- 2011-08-01 19:05:00下载
- 积分:1
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SVMchaopingmian
对二分类数据集分类,计算准确率并画出分界面(Classification of the two data sets classification, calculation accuracy and to draw the interface
)
- 2012-01-04 16:38:05下载
- 积分:1