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Interpolation
断层序列图像的层间插值代码,matlab环境下的代码,超简单的哦~( The interpolation of two pictures.)
- 2010-12-07 21:13:51下载
- 积分:1
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ste_zcr_new_2
calculation of short time energy and zero crossing rate by using mat lab
- 2010-12-24 13:45:43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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LMI
非线性系统观测器的设计:LMI方法(论文及程序)(LMI nonlinear observer)
- 2011-12-23 16:36:22下载
- 积分:1
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functio1
hello
EEG signal prepossessing upload for me
- 2018-07-30 14:35:53下载
- 积分:1
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matlab_for_envelope
一个原来绘制信号包络的函数,希望对大家有帮助(An original drawing signal envelope function, we want to help)
- 2010-06-21 14:47:14下载
- 积分:1
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untitled
用MATLAB的SIMULINK做的BPSK调制仿真(Using MATLAB-SIMULINK simulation do BPSK modulation)
- 2007-12-25 20:58:43下载
- 积分:1
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em
说明: EM算法的Matlab实现,针对GMM模型(EM algorithm for GMM Model)
- 2012-03-28 21:39:36下载
- 积分:1
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Elad_super_resolution
A very useful matlab package on super-resolution.(Matlab package on super-reso lution.)
- 2007-04-18 17:17:17下载
- 积分:1
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diandianhedianchang
利用matlab计算点电荷场强的教程 清晰易懂~(Calculated using matlab tutorial point charge field lucid ~)
- 2013-10-05 08:32:23下载
- 积分:1