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newnethodotsu
一个新设计的OTSU算法,使用方法如下:% load clown
% subplot(221)
% imshow(X/max(X(:)))
% title( Original , FontWeight , bold )
% for n = 2:4
% Iseg = otsu(X,n)
% subplot(2,2,n), colormap(gray)
% imshow(Iseg)
% title([ n = int2str(n)], FontWeight , bold )
% end(OTSU design a new algorithm, using the method as follows: load clown subplot (221) imshow (X/max (X (:))) title (Original, FontWeight, bold) for n = 2:4 Iseg = otsu (X, n) subplot (2,2, n), colormap (gray) imshow (Iseg) title ([n = int2str (n)], FontWeight, bold) end)
- 2007-11-14 12:45:49下载
- 积分:1
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particle
说明: 本代码为经典PSO微粒群算法,通过修改w值,使得PSO的搜索在全局与局部之间得到最优(The code for the classic PSO particle swarm algorithm, by modifying the w value, makes the PSO search between the global and local optimal)
- 2010-03-23 15:35:30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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NcutClustering_7
image segmentation, normalized cut for clustring
- 2013-02-11 16:15:43下载
- 积分:1
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TLS
全局最小二乘算法的实现,可以实现观测和混合中都有噪声的情况(TLS solution)
- 2014-10-05 01:12:58下载
- 积分:1
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simulink
沈辉+《精通simulink系统仿真与控制》.pdf(Shen Hui "system simulation and control of simulink")
- 2013-11-09 11:15:54下载
- 积分:1
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Arnold
matlab实现Arnold置乱的程序,对初学者有用(matlab Arnold matlab Arnold)
- 2013-12-11 10:34:08下载
- 积分:1
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fftrl
这是一个方便的计算FFT的程序带坐标的fft变换(It s a program for fftrl,)
- 2010-06-12 22:42:58下载
- 积分:1
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C_V
用来描述铁电存储器MFIS-FET结构的C-V(即电容-电压)关系(Used to describe the ferroelectric memory MFIS-FET structure of CV (ie capacitance- voltage) relationship)
- 2010-06-24 10:49:24下载
- 积分:1
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shangzaimatlab
说明: pso基本算法的代码,能满足最基本的需要,适合初学人员,便于理解(pso )
- 2010-05-04 10:43:29下载
- 积分:1