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daitong
使用MATLAB进行编程,实现一个带通滤波器(coding by MATLAB,realize a band-
pass filter)
- 2015-04-09 10:43:01下载
- 积分:1
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ldpc_Robert_org
经典lDPC编码程序 Robert的论文里的部分仿真程序
(Robert LDPC coding procedures classic papers in the part of simulation program)
- 2007-07-31 21:50:17下载
- 积分:1
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MarrPoggio
Implementation of Marr-Poggio-Grimson stereo pair matching. The demonstration for random dot stereopair is included.
- 2014-10-26 05:06:25下载
- 积分:1
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Kalman-Filtering-with-Constraint
Kalman Filtering with Equality and Inequality State Constraints
- 2014-10-15 00:02:34下载
- 积分:1
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yy
说明: 矩阵的LU分解 PLU分解 以及平方根分解(LU decomposition of the matrix square root PLU decomposition and decomposition)
- 2013-11-22 19:25:11下载
- 积分:1
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fengxingshu
说明: 分形树生成程序,matlab源码,有兴趣的可以来看一看。(Fractal tree generator, matlab source, interested can come take a look at.)
- 2008-09-27 15:49:29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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overlap_add
利用重叠相加法实现线性卷积,其中应用了fft和ifft原理(Use of overlap-add method to achieve linear convolution)
- 2012-05-26 23:24:47下载
- 积分:1
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pattern-recognition
用matlab实现模式识别里的K-均值聚类算法,算法简单(Pattern Recognition using matlab to achieve in the K-means clustering algorithm, the algorithm is simple)
- 2013-11-01 11:58:53下载
- 积分:1
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sat_VSI_48_Pulse
Forty Eight pulse converter is VSI converter used to convert the DC voltage to AC voltage using Sin Pulse Width Modulation technique.
- 2012-01-23 20:48:32下载
- 积分:1