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quxiannihe
曲线拟合和多项式拟合-1，主要用于工程计算，工程优化。(Curve fitting and polynomial fitting, is mainly used for engineering calculations, engineering optimization.)
- 2010-06-29 14:04:51下载
- 积分：1
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Z-N-PID-control
Z N法进行PID控制，采用simulink进行仿真，得到最优控制参数，属于工程上的参数整定
(Z N method for PID control, using simulink simulation, get the optimal control parameters, belong to the engineering parameter setting
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- 2013-05-22 09:49:47下载
- 积分：1
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FDTD_1
由于Matlab软件的网络通信局限,使得在并行时域有限差分( FDTD)计算仿真中,难以实现子域间的消息发送与接收操作(As the Matlab software, network communications limited, so in parallel finite difference time domain (FDTD) simulation calculation, it is difficult to achieve sub-domain of the message and receive operation)
- 2010-05-18 20:12:16下载
- 积分：1
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WOW_matlab
this simulation is a way for watermarking and steganography with WOW
- 2013-08-25 17:13:37下载
- 积分：1
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new_ici
this is all about ici method and ofdm system using main algo.....................
- 2013-09-23 16:38:40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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matlab-draw-curve
matlab绘制多种二维数据曲线图，三维曲线图，图像处理及动画制作。(matlab draw a variety of two-dimensional data graph, 3D graph, image processing and animation.)
- 2012-07-04 22:27:54下载
- 积分：1
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MatlabNotes
Matlab version seven complete guide
- 2011-09-01 20:00:44下载
- 积分：1
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Wiener
维纳滤波算法去除加噪声音乐程序，效果比较好，有图为证。(Wiener filter algorithm to remove noise adding music program, the effect is better, has a license to the graph.
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- 2013-12-18 10:23:20下载
- 积分：1
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dctfinalinmatlab
It will take a DCT of Jpg image.
- 2009-03-27 23:19:01下载
- 积分：1
