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dual-tree
首先将非平稳的故障振动信号进行双树复小波包分解,得
到不同频带的分量;然后对每个分量求其峭度值和相关系数并进行比较;最后选取峭度值和相关系数较大的分量
进行软阈值降噪和双树复小波包重构,即可有效地消除振动信号中噪声的干扰,同时保留信号中的有效信息即实
现了故障特征信息的提取。(In view of the above situation, a new fault diagnosis
method is proposed based on dual-tree complex wavelet packet transform and threshold de-noising. Firstly, the
non-stationary fault signal is decomposed into several different frequency band components through dual-tree
complex wavelet packet decomposition. Secondly, Kurtosis and the cross-correlation coefficient of each
component are obtained and compared. Due to the kurtosis reflecting the signal variations, if the kurtosis value is
bigger, the degree of the change of signal is bigger too. The correlation coefficient can reflect the proximity
between the component and the original signal at the same time, the correlation coefficient is bigger, the more
similar with the original signal. Finally, the components that have a bigger value are chosen to be de-noised by a
soft threshold and reconstructed by dual-tree complex wavelet packet transform. The noise interference was
eliminated effectively, and the effective si)
- 2014-05-28 17:02:14下载
- 积分:1
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PCA图像融合算法 pcaimfuse
说明: PCA图像融合算法,提取主成分来对图像进行融合,感兴趣的可以看看。(Principal component analysis Image fusion algorithm, extraction of principal components to image fusion.Those of you who are interested can take a look.)
- 2020-07-05 19:46:51下载
- 积分:1
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相机标定源代码
相机标定,Tsai 张正友算法,Matlab实现((Camera calibration, Tsai zhangzhengyou algorithm, Matlab achieve))
- 2018-05-01 13:35:32下载
- 积分:1
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34188398matlab2
小波去噪的程序,很好用,推荐给大家使用。(Wavelet denoising procedures, very easy to use, recommended for everyone to use)
- 2019-03-28 16:04:00下载
- 积分:1
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main
利用opencv基于灰度投影算法进行图像平移补偿(Use opencv gray projection algorithm for image translational compensation)
- 2016-05-24 10:21:14下载
- 积分:1
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LSB
全套的LSB算法代码,下载就能直接运行,包含水印的嵌入,提取加测试。(Full set of LSB algorithm code)
- 2018-05-18 19:16:32下载
- 积分:1
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FBP
经典CT图像处理算法,卷积反投影算法,欢迎使用(Classical CT image processing algorithm, convolution inverse projection algorithm)
- 2019-06-17 17:34:55下载
- 积分:1
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matlabchepaidingwei
一个基于matlab的车牌定位的原程序.可以实现精确的车牌定位。(a Matlab-based positioning of the license plate of the original procedure. Can achieve precise positioning of the plates.)
- 2006-08-30 19:43:23下载
- 积分:1
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loacation_nornmalization_iris
采用最小均方差法对虹膜瞳孔定位,虹膜外圆定位,归一化及其增强处理,圆拟合(Using least-mean-variance method of positioning the iris pupil, iris outer location, normalized and enhanced handling, circle fitting)
- 2008-12-17 23:51:01下载
- 积分:1
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Automatic-Building-Extraction.pdf
3D 点云建筑物分割代码3D 点云建筑物分割代码3D 点云建筑物分割代码(3D point cloud, buildign segmentation3D point cloud, buildign segmentation3D point cloud, buildign segmentation)
- 2020-08-01 21:08:35下载
- 积分:1