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jiahua
697493自适应滤波算法的MATLAB代码 (697493 adaptive filtering algorithm MATLAB code)
- 2009-01-07 21:37:14下载
- 积分:1
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tx_subinterl
对LTE标准下Turbo的三路输出进行子块交织,列入行出。(Standards for LTE Turbo three-way output sub-block interleaving, included the line out.)
- 2013-11-20 11:59:44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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moon-around-the-earth
实现了嫦娥奔月过程中的卫星变轨的动态演示,matlab的动态画面编程。(Moon in the process of realization of the satellite orbit dynamic presentation, matlab programming dynamic picture)
- 2014-03-21 11:01:06下载
- 积分:1
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6019199320075181841151433001
这是MATLAB图像处理函数的具体讲解,非常实用具体,对图像研究方面的编程很有帮助(This is the MATLAB image processing function on the specific, very concrete and practical, research on the image programming helpful)
- 2009-05-01 23:30:34下载
- 积分:1
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BP
说明: 实现带通滤波器的源代码,绝对可用,在matlab上直接运行就可以了(Band pass filter of the source code is absolutely available to run directly in matlab
)
- 2012-04-30 12:52:38下载
- 积分:1
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SSIM
采用MATLAB语言,编程实现了数字图像的结构相似系数(SSIM)的计算,程序简单,易运行。(Using MATLAB language, programme the digital image structure similarity coefficient (SSIM). Andthe program is simple, easy to run.)
- 2017-04-11 16:32:30下载
- 积分:1
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function
一个函数的编写,实现四阶龙格-库塔方法解高阶微分方程组的初值问题 (Write a function to achieve fourth-order Runge- Kutta method for solving the initial value problem of higher order differential equations)
- 2010-10-29 16:14:55下载
- 积分:1
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The-Micro-Doppler-Effect-code
雷达信号中的微多普勒效应这本书的所有源代码,包括原处理信号的dat形式的文件,包括STFT等m文件(The micro-Doppler radar signal effect this book all the source code, including the form of the original signal processing dat files, including documents STFT and other m)
- 2020-12-07 19:19:20下载
- 积分:1
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MATLABhanshusuchashouce
MATLAB函数速查手册,详细的介绍了matlab使用的各种函数的用法,方便大家查找。(MATLAB Function Quick Reference, a detailed description of the matlab functions using a variety of usage, we find convenient.)
- 2010-12-10 21:16:57下载
- 积分:1