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OFDM-MIMO
MIMO-OFDM implementation in Matlab
- 2009-10-12 17:58:31下载
- 积分:1
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bluetooth_GFSK_modem
利用Matlab编程模擬实现,藍芽GFSK調變解調,希望供大家参考学习(Matlab simulation programming, Bluetooth GFSK modulation and demodulation and hope for your consideration study)
- 2007-02-09 11:27:40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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image-segmentation-for-object-recognition
segmentation and object detection
- 2014-10-08 17:30:25下载
- 积分:1
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瞬时功率计算
说明: 能够实现三相离散电压电流的瞬时有功、无功功率计算以及绘制。(It can realize instantaneous active and reactive power calculation and drawing of three-phase discrete voltage and current.)
- 2019-02-28 16:53:29下载
- 积分:1
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slidingmodecontrol_liujinkun
刘金琨教授写《滑模变结构控制matlab仿真》随书程序源码(Professor Liu Jinkun write " Sliding Mode Control matlab simulation" program source code with the book)
- 2010-05-10 22:32:01下载
- 积分:1
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bpxor
利用BP网络实现异或功能,对输入矢量进行分类,源程序(BP networks using XOR function to classify the input vector, source code)
- 2010-12-17 16:39:29下载
- 积分:1
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panjie
用于空间信号叠加谐波个数判断,或者时间序列信号周期项个数判断(to decide the number of waves in singnal)
- 2014-10-16 11:26:11下载
- 积分:1
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Sim_Fast_Tanner
matlab to ise change code
- 2013-09-30 13:18:21下载
- 积分:1
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cd
说明: code for image subtraction
- 2014-01-27 14:07:44下载
- 积分:1