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matlab-hanshubiao
学习matlab的很好的参考,集合了很多函数,适合新手和有一定基础的人士使用,推荐(learning Matlab good reference, a lot of function sets, suitable for novice and to a certain extent based on the use of recommended)
- 2007-05-29 09:48:52下载
- 积分:1
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Simulation_of_channel_estimation_and_equalization
Simulation of channel estimation and equalization for WiMAX PHY layer in simulink (pdf)
- 2009-10-22 22:11:46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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Modified_UCA_ESPRIT
单次快拍实现DOA的估计,“Modified UCA-ESPRIT and Modified UCA-ROOT-MUSIC for Estimating Doa of Coherent Signals Using One Snapshot.pdf”文章的配套代码(Modified UCA-ESPRIT and Modified UCA-ROOT-MUSIC for Estimating Doa of Coherent Signals Using One Snapshot.pdf”its code)
- 2021-03-10 15:09:26下载
- 积分:1
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stl
在MATLAB中完成STL数据的渲染,用PATCH函数完成加颜色和亮度等功能(Completion of the STL data in MATLAB rendering)
- 2013-11-26 13:07:55下载
- 积分:1
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Frequency-dependent-noise-attenuatio
地震资料 数据处理 分频去噪 模块 主要压制随机噪音 异常振幅 野值 大值
方法特点:1 针对性强,主要去除随机噪音;2 随机噪音识别能力强,达到了较高的去噪水平;3 具有自适应性,能根据不同位置的不同特点统计识别噪音;4 振幅保真,对有效信号的保护性好;5 操作者可根据经验选择参数组合灵活去噪,达到较好的结果。
应用对比:为了展示本模块的去噪效果,所选取的对比对象是某知名成熟商业软件的分频去噪模块,其去噪效果在当前诸多成熟软件模块中是佼佼者,在地震资料处理界具有很好的口碑。
通过对比,说明本模块:1 针对性强,主要去除随机噪音和异常振幅等。2 随机噪音识别能力强,达到了较高的去噪水平。3 具有自适应性,能根据不同位置的不同特点统计识别噪音。4 振幅保真,对有效信号的保护性好。5 操作者可根据经验选择参数组合灵活去噪,达到较好的结果。(Frequency-dependent noise attenuation
seismic data, processing module, is mainly to suppress random noise, denoising abnormal/large amplitude values
Method of characteristics: 1 targeted, mainly to remove random noise 2 random noise and strong ability to identify , reach a higher level of de-noising 3 is adaptive , able to identify the noise statistics according to the different characteristics of different positions 4 amplitude fidelity , the effective protection of the signal is good 5 denoising operator flexibility to select the combination of parameters according to the experience , to achieve better results .
Application contrast: To demonstrate the effect of the de-noising module , the selected object is a well-known comparative commercial software divide mature noising module de-noising effect is the current leader in many mature software module in seismic data processing industry has a good reputation.
By contrast, the description of the module : a targeted, mai)
- 2013-12-12 16:51:44下载
- 积分:1
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1
说明: DC MOTTOR SPEED CONTROL
- 2010-10-14 01:09:45下载
- 积分:1
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MadgwickAHRS
在matlab环境中将陀螺仪加速度计以及磁传感器数据转为四元数的脚本。(The script will change accelerometers and gyroscopes magnetic sensor data into a quaternion In the matlab environment.)
- 2013-10-01 16:55:01下载
- 积分:1
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pingcha
可以进行很多常见的平差测量计算 免去自己动手计算的麻烦(Adjustment can be many common measurement and calculation eliminates the trouble of calculating it yourself)
- 2011-10-23 11:07:17下载
- 积分:1
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Mex
Mex file for the matlab users
- 2012-02-29 21:07:52下载
- 积分:1