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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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八个方向的sobel边缘检测算法
利用八方向的sobel边缘检测，实现对图像多梯度的梯度检测，检测出的边缘信息更加平滑连续。(Eight direction Sobel edge detection is used to realize gradient detection of image multi gradient, and the edge information detected is more smooth and continuous.)
- 2018-06-12 11:35:37下载
- 积分：1
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flutter
采用片条理论进行机翼的颤振分析，匹配点和非匹配点分析(Carried out using strip theory wing flutter analysis, matching and non-matching point analysis points)
- 2013-12-15 16:06:58下载
- 积分：1
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vtkVolume-from-DICOM.tar
Get and render vtk Volume DICOM file
- 2015-04-13 18:47:09下载
- 积分：1
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CPKJ
首次适应算法First Fit： 从空闲分区表的第一个表目起查找该表,把最先能够满足要求的空闲区分配给作业,这种方法目()
- 2018-02-07 08:00:26下载
- 积分：1
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susan
说明： susan算法是基于灰度的特征点获取方法，适用于图像的边缘提取(susan algorithm is based on the gray-scale method to obtain the feature points for image edge extraction)
- 2008-12-03 22:18:48下载
- 积分：1
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fpeak
求取信号的峰值点。可以通过设置信号峰值范围、信号幅度来确定特定的峰值点。(The peak point of the signal to strike. Can set the scope of the signal peak, the signal range to determine the specific point of the peak.)
- 2009-05-06 21:55:36下载
- 积分：1
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cecaijance
颜色预测模型评估,印刷品质量检测技术,实现光谱分析，检测色彩偏差(color model assessment, print quality inspection technology, spectrum analysis, color deviation detection)
- 2007-05-29 11:57:25下载
- 积分：1
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MEMB
盒子覆盖方法,用于求分形网络的维度，是复杂网络分析的重要手段(box-covering metthod,fractal demession,self-similar )
- 2013-05-05 16:28:56下载
- 积分：1
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sift_0_9
sift算法0.9版；对数据进行提取后聚类；采用聚类算法k-means(sift algorithm version 0.9 right after extracting the data clustering using k-means clustering algorithm)
- 2009-10-07 18:04:10下载
- 积分：1
