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Rapport
programation matlab de tp de traitement
- 2010-07-15 16:19:25下载
- 积分：1
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POST
用来求PST问题，聚类分析的一些重要的复杂的实际性方法等等。(POST is very good way of solving simple matter)
- 2014-09-05 14:45:35下载
- 积分：1
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Continuous
1维信号的周期性连续小波变换，包括对小波脊和骨架提取。(Periodic one-dimensional signal of continuous wavelet transform, including wavelet ridge and skeleton extraction.)
- 2020-06-30 03:20:01下载
- 积分：1
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kongjianpinghua
传统的DOA估计算法，如MUSIC、ESPRIT算法，都是在假设信号没有相干的情况下求解的，一旦信源信号具有相干性，估计性能会急速下降，所以提出了空间平滑的算法，解决相干信号的波达估计！(The traditional DOA algorithms, such as MUSIC, ESPRIT algorithm, is under the assumption that the signal is not coherent case solving, once the source signal with coherence, estimation performance will fall, so put forward spatial smoothing algorithm, to solve the coherent signal estimation of direction of arrival!)
- 2012-11-11 20:54:46下载
- 积分：1
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add-noise-and-remove-noise
给一段1s声音，添加入噪声，输出，然后去除噪声，输出(add noise to a 1s-length voice,excute it ,and remove the noise,and excute it)
- 2013-12-24 18:11:08下载
- 积分：1
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videoIO-r531-source
matlab 上用的视频输入输出函数比mmread要好！(use matlab video input and output function mmread better than that!)
- 2009-04-22 22:09:22下载
- 积分：1
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QAM_16
16QAM的解调方式，需要的朋友可以下载啊(16QAM demodulation method needs friends can download ah)
- 2009-12-28 20:33:52下载
- 积分：1
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deriv
This function returns the numerical derivative of an analytic function.
Of special note, is the incorporation of the "complex stepderivative"approach which offers greatly improved derivative accuracy compared to approximations. This is especially germain when accuracy at the level of machine precision is a concern.
(Programming the finite element toolbox using matlb finite element toolbox, many examples for yourself as there is a very friendly interface, input parameters can be)
- 2010-12-26 14:19:33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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isomap3(cover-tree)
dimensionality reduction software package of ISOMAP
- 2011-10-26 10:04:11下载
- 积分：1
