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max3232
说明: max3232分立元件内部结构图及其功能引脚。(max3232 discrete components within the structure and function pin.)
- 2011-02-19 14:06:50下载
- 积分:1
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Desktop
Calmodel for Benchmark
- 2010-05-17 20:10:51下载
- 积分:1
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optimal-Design-Of-Machine
机械优化设计Matlab程序 哈尔滨工业大学 孙靖民主编
(Optimization of Mechanical Design Matlab program editor of Harbin Institute of Technology Sun Jingmin)
- 2011-06-27 22:35:15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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filtrage_analogique
les procédés de filtrages analogiques
- 2010-10-19 20:22:41下载
- 积分:1
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DirectKinematics_matlab_new
Direct Kinematics code for RVM1 Robot manipulator. It also calculate inversekinematics, too.
- 2009-11-07 07:12:10下载
- 积分:1
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SVPWM_MATLAB7.1
基于MATLAB7.1的空间电压矢量控制仿真模型,可在MATLAB7.1直接运行(SVPWM based MATLAB7.1 control simulation model can be run directly in MATLAB7.1)
- 2010-11-11 09:42:51下载
- 积分:1
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CNN
细胞神经网络,简称为CNN,由于其能够产生混沌吸引子,而被广泛应用于加密系统中,本代码为画出CNN的超混沌吸引子。(Neural networks, referred to as CNN, due to its ability to generate chaotic attractor, and is widely used encryption system, the code for drawing CNN super chaotic attractors.)
- 2015-12-09 09:31:22下载
- 积分:1
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B-splineApproximation
B-spline曲线、曲面的插值和逼近算法以及B-spline曲线、曲面的显示。代码是matlab格式的。(B-spline curve, surface interpolation and approximation algorithm, as well as B-spline curve, surface display. Code matlab format.)
- 2007-11-07 20:10:16下载
- 积分:1
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echo_nlms
it is the nlms algorithm for the echo cancellor
- 2011-11-29 17:00:35下载
- 积分:1