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DFA
本程序主要用于时间序列的去趋势算法,也就是常说的DFA。(here is a program to estimate the DFA of a time series)
- 2011-05-14 21:19:50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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last
最优化缓存分配。系统模型是基站和用户,通过优化用户端缓存分配,使得基站容量最大(Optimizing cache allocation. System model is a base station and the user, by optimizing cache allocation client, making the maximum capacity of base station)
- 2016-01-15 05:40:23下载
- 积分:1
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CCodes
二进制编码的简单遗传算法的C语言源程序,很少的C语言优化算法程序(Binary-coded genetic algorithm simple C-language source code, very few of the C language program optimization algorithm)
- 2007-09-28 15:11:15下载
- 积分:1
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lv
说明: 各种滤波,例如中值滤波,平均滤波的源代码,进行图像平滑(A variety of filtering, for example, median filtering, average filtering of the source code for image smoothing)
- 2010-12-14 20:24:00下载
- 积分:1
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matlabfusetool
图像识别概述统计模式的识别方法、结构语句的识别方法、模糊集识别法、神经网络识别法等(Image recognition methods outlined in the statistical model identification, structure identification method statements, fuzzy set identification method, neural network identification method, etc.)
- 2010-01-15 17:24:00下载
- 积分:1
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twolink_661908825
推导运动学中杆运动模型的例程,对初学者有一定的价值。(Kinematic motion model is derived in the bar routines, for beginners a certain value.)
- 2011-01-10 22:44:44下载
- 积分:1
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ml
说明: mimo系统ml算法的matlab仿真程勋(algorithm for mimo systems ml)
- 2012-05-17 17:42:35下载
- 积分:1
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bear
一篇课程论文,介绍滚动轴承的故障诊断,有详细的matlab程序(A course papers, on the rolling bearing fault diagnosis, detailed matlab program)
- 2012-11-03 20:44:26下载
- 积分:1
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粒子群算法综合线阵低副瓣方向图
说明: 利用粒子群算法综合微带天线阵列方向图,可以自适应调节副瓣电平和波瓣宽度。(By using particle swarm optimization (PSO) to synthesize the pattern of microstrip antenna array, the sidelobe level and lobe width can be adjusted adaptively.)
- 2020-11-23 16:19:33下载
- 积分:1