机构

• 地理科学与资源研究所 [2]
• 长春光学精密机械与物... [1]
• 自动化研究所 [1]

采集方式

• OAI收割 [4]

内容类型

• EI期刊论文 [1]
• SCI/SSCI论文 [1]
• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2018 [1]
• 2012 [2]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A sequential feature extraction method based on discrete wavelet transform, phase space reconstruction, and singular value decomposition and an improved extreme learning machine for rolling bearing fault diagnosis 期刊论文  OAI收割 PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING, 2018, 卷号: 232, 期号: 6, 页码: 635-649 作者:  Li, D. Z.;  Zheng, X.;  Xie, Q. W.;  Jin, Q. B.   |  收藏  |  浏览/下载：193/0  |  提交时间：2019/07/12 Fault identification classification  rolling bearing  discrete wavelet transform  phase space reconstruction  singular value decomposition  improved extreme learning machine   A Practical Guide to Discrete Wavelet Decomposition of Hydrologic Time Series SCI/SSCI论文  OAI收割 2012 Sang Y. F. 收藏  |  浏览/下载：28/0  |  提交时间：2014/12/24 Hydrologic series analysis  Discrete wavelet decomposition  Reference  energy function  Significance testing  Noise  Uncertainty  rainfall-runoff  singularity detection  spectral-analysis  neural-networks  climate-change  model  multiresolution  identification  variance  scales   A Practical Guide to Discrete Wavelet Decomposition of Hydrologic Time Series EI期刊论文  OAI收割 2012 作者:  Sang Yan-Fang 收藏  |  浏览/下载：24/0  |  提交时间：2012/11/23 Wavelet decomposition  Discrete wavelet transforms  Intelligent systems  Time series analysis  Uncertainty analysis   Multiwavelet based multispectral image fusion for corona detection (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang X.;  Yang H.-J.;  Sui Y.-X.;  Yan F.;  Yan F. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 Image fusion refers to the integration of complementary information provided by various sensors such that the new images are more useful for human or machine perception. Multiwavelet transform has simultaneous orthogonality  symmetry  compact support  and vanishing moment  which are not possible with scalar wavelet transform. Multiwavelet analysis can offer more precise image analysis than wavelet multiresolution analysis. In this paper  a new image fusion algorithm based on discrete multiwavelet transform (DMWT) to fuse the dual-spectral images generated from the corona detection system is presented. The dual-spectrum detection system is used to detect the corona and indicate its exact location. The system combines a solar-blind UV ICCD with a visible camera  where the UV image is useful for detecting UV emission from corona and the visible image shows the position of the corona. The developed fusion algorithm is proposed considering the feature of the UV and visible images adequately. The source images are performed at the pixel level. First  a decomposition step is taken with the DMWT. After the decomposition step  a pyramid for each source image in each level can be obtained. Then  an optimized coefficient fusion rule consisting of activity level measurement  coefficient combining and consistency verification is used to acquire the fused coefficients. This process reduces the impulse noise of UV image. Finally  a new fused image is obtained by reconstructing the fused coefficients using inverse DMWT. This image fusion algorithm has been applied to process the multispectral UV/visible images. Experimental results show that the proposed method outperforms the discrete wavelet transform based approach.