-
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
-
dlushdebugger
各种矩阵算法库,支持UpperTriangularMatrix,LowerTriangularMatrix, Diagon()
- 2018-03-14 07:38:51下载
- 积分：1
-
图像相似度计算方法集
说明： 这个文件中包含了三种图像相似度的计算方法，分别是灰度分布计算方法、颜色分布直方图计算方法、还有结构相似度SSIM计算方法。(This file contains three image similarity calculation methods, namely, gray distribution calculation method, color distribution histogram calculation method, and structure similarity SSIM calculation method.)
- 2020-05-19 18:14:28下载
- 积分：1
-
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
-
barcode
PDF417条码定位与检测，视频课程作业，很好的定位了条码而且将其旋转到正方向(PDF417 bar code location and detection, video course work, a good positioning of the bar code and will rotate to the positive direction of its)
- 2010-03-12 13:37:05下载
- 积分：1
-
matlabColorSegemt
利用matlab对彩色图像进行分割处理，图像针对bmp jpg pcn格式(color image segment)
- 2020-11-20 11:19:38下载
- 积分：1
-
ShowJPEG
显示JPEG图片的源码.........................................(show jpeg picture)
- 2013-12-25 21:55:52下载
- 积分：1
-
rgb_yuv_1
将.rgb格式的图像转换为.yuv格式的图像,.yuv格式的图像按4：2：0采样(will. Rgb format conversion of images. YUV format images. YUV format image with 4:2:0 sampling)
- 2005-04-21 15:04:01下载
- 积分：1
-
二值图开运算
说明： 将原图二值化处理后，对二值图像进行腐蚀处理去掉图中主体以外的噪点或小斑迹(After binarization of the original image, the binary image is corroded to remove the noise or small spots outside the main body of the image)
- 2020-01-12 16:58:09下载
- 积分：1
-
ShowWMF
显示WMF格式位图！(show WMF format bitmaps!)
- 2005-01-29 09:00:52下载
- 积分：1
