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EdgeDetect
图像边缘检测 MATLAB 仿真程序。roberts,sobel,prewitt,log,小波检测(Image Edge Detection MATLAB simulation program. roberts, sobel, prewitt, log, wavelet detection)
- 2009-05-20 20:44:23下载
- 积分:1
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threshold
说明: python语言,三种阈值分割方式,简单阈值分割,自适应阈值分割,OTsu分割方式(Python language, three methods of image segmentation , simple threshold segmentation, adaptive threshold segmentation, OTsu segmentation)
- 2019-04-06 16:08:23下载
- 积分:1
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Locating-Voltage-Sags
电压跌落是最严重的动态电能质量问题之一,
精确定位电压跌落起止时间是应对电压跌落问题的
重要前提和基础。由于电压采样信号往往有噪声分
量,现有的方法在定位电压跌落的起止时间时存在
局限性。本文提出利用多小波变换及相邻系数去噪
的电压跌落定位方法。多小波兼有对称性、正交性、
有限支撑性和二阶消失矩等优异的信号处理性能,
利用GHM多小波可以准确定位电压跌落起止时间。
多小波变换系数在每层之间具有对应关系,多小波
相邻系数将紧相邻的若干个系数作为一个整体来确
定阈值,考虑了系数之间的相关性,能获得更好的
去噪效果。通过 Matlab 进行仿真验证,仿真结果表
明,所提出的方法的正确性。
(Voltage sag is one of the most serious
dynamic power quality problems. Critical start-time
and end-time are important indices for voltage sags.
But the sampling signals often have noisy component,
the locations of start-time and end-time are hard to get.
Wavelet is an effective tool for those non-stationary
signal processing and has been used in this field. Local
feature in the signal can be enlarged after the
transformation using the scalar wavelet. But scalar
wavelets cannot contain orthogonality, symmetry,
compact support and higher order of vanishing
moments simultaneously. In this thesis, multi-wavelets
GHM is used to detect and locate power quality
disturbances. Multi-wavelets offer many excellent
properties such as the same approximation order but
more compact support. The dependence of the
multi-wavelets coefficients varies with the level, so
neighboring coefficien)
- 2014-03-25 17:08:50下载
- 积分:1
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daoxianwudongjianmo
实现对输电线路导线舞动的实时检测。并且可对导线舞动的轨迹进行建模。(Galloping on the transmission line to achieve real-time detection. And conductor galloping track can be modeled.)
- 2013-11-15 16:13:36下载
- 积分:1
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Relief特征选择
relief 特征选择算法,用来约简数据属性。图像处理等(Relief feature selection algorithm is used to reduce data attributes. Image processing, etc.)
- 2017-08-06 16:21:27下载
- 积分:1
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phog
phog算法的matlab实现,hog特征用于对象识别,比如人脸识别、人体识别。(phog algorithm matlab achieve, hog characteristics for object recognition, such as face recognition, human identification.)
- 2008-06-22 21:14:23下载
- 积分:1
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能量检测法源代码
能量检测法是一种比较简单的信号检测方法[1], 属于信号的非相干的检测, 直接对时域信号采样值求模,然后平方即可得到;或利用FFT转换到频域,然后对频域信号求模平方也可得到。它无需知道检测信号的任何先验知识,对信号类型也不作限制。
实际上,能量检测是在一定频带范围内作能量积累,如果积累的能量高于一 定的门限,则说明信号的存在;如果低于一定的门限,则说明仅有噪声。能量检 测的出发点是信号加噪声的能量大于噪声的能量。能量检测方法对信号没有作任何假设,是一种盲检算法。
此代码“利用FFT转换到频域,然后对频域信号求模平方”方法来实现对用户的检测。(In fact, energy detection is used for energy accumulation in a certain frequency range. If the accumulated energy is higher than a certain threshold, the existence of the signal is indicated. If the threshold is lower than the threshold, then only noise is indicated. The starting point of energy detection is that the energy of signal plus noise is greater than that of noise. The energy detection method does not make any assumptions about the signal, and it is a blind detection algorithm.
This code "converts the frequency domain into the frequency domain by FFT, then calculates the square of the square of the frequency domain signal" to realize the detection of the user.)
- 2021-04-29 16:18:42下载
- 积分:1
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mtdel-wsnhows
说明: 一个简单的windows TDI框架,通过他可以熟悉TDI框架模型(A simple windows TDI framework through which he can familiarize himself with the TDI framework model)
- 2019-04-21 02:20:50下载
- 积分:1
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jsjshjueintrduction
计算机视觉文本介绍,包括研究背景、意义、以及应用(Text of computer vision, including research background, significance, and application)
- 2007-11-13 10:06:23下载
- 积分:1
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smartcar_image
智能车程序 用于图像采集,处理等~~~~~~~~~~~~~~(smartcar programme)
- 2009-04-15 10:01:52下载
- 积分:1