中国科学院机构知识库网格系统: 检索

A review on the applications of wavelet transform in hydrology time series analysis SCI/SSCI论文 OAI收割
2013
Sang Y. F.

收藏 | 浏览/下载：33/0 | 提交时间：2014/12/24

Hydrologic time series analysis Wavelet transform Periodicity Trend De-noising Complexity Hydrologic forecasting multiscale entropy analysis artificial neural-networks information-theory noise-reduction rainfall fields trend analysis river flow model uncertainty multiresolution

Pan-Sharpening Using Weighted Red-Black Wavelet 会议论文 OAI收割
Tsukuba, Japan, 11-15 November 2012
作者: Qingjie Liu; Yunhong Wang; Zhaoxiang Zhang; Lining Liu

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收藏 | 浏览/下载：36/0 | 提交时间：2017/02/09

Principal Component Analysis Correlation Remote Sensing Multiresolution Analysis Spatial Resolution Discrete Wavelet Transforms

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：30/0 | 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

Directional multiscale edge detection using the contourlet transform (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者: Jin L.-X.; Han S.-L.; Zhang R.-F.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

Wavelet multiresolution analysis allows us to detect edges at different scales also to obtain other important aspects of the extracted edges. However due to the usual two-dimensional tensor product wavelet transform is not optimal for representing images. The main problem in edge detection using wavelet transform is that it can only capture point-singularities and the extracted edges are not continuous. In order to solve that problem we propose a new image edge detection method based on the contourlet transform. The directional multiresolution representation Contourlet takes advantages of the intrinsic geometrical structure of images and is appropriate for the analysis of the image edges. Using the modulus maxima detection an image edge detection method based on contourlet transform is proposed. To suppress the image noise effect on edge detection the scale multiplication in contourlet domain is also proposed. Through real images experiments the proposed edge detection method's performance for the extracted edges is analyzed and compared with other two edge detection methods. The experiment result proves that the proposed edge detection method improves over wavelet-based techniques and Canny detector and also works well for noisy images. 2010 IEEE.

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：31/0 | 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.

Application of wavelet theory in research on weight function of meshless method 期刊论文 OAI收割
APPLIED MATHEMATICS AND MECHANICS-英语 EDITION, 2005, 卷号: 26, 期号: 5, 页码: 662-666
作者: Zhang, H; Zhang, XB; Ge, XR

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收藏 | 浏览/下载：27/0 | 提交时间：2018/06/05

meshless method weight function spline wavelet multiresolution analysis

An automatic target detection algorithm based on wavelet analysis for infrared image small target in background of sea and sky 会议论文 OAI收割
Conference on Acquisition, Tracking, and Pointing XVII, ORLANDO, FL, April 22-22, 2003
作者: Wei Y(魏颖); Shi ZL(史泽林); Yu HB(于海斌)

收藏 | 浏览/下载：24/0 | 提交时间：2012/06/06

image recognition automatic target detection wavelet multiresolution analysis edge detection sea-level line

Wavelet analysis based detection algorithm for infrared image small target in background of sea and sky 会议论文 OAI收割
3rd International Symposium on Image and Signal Processing and Analysis (ISPA), Rome, ITALY, September 18-20, 2003
作者: Wei Y(魏颖); Shi ZL(史泽林); Yu HB(于海斌)

收藏 | 浏览/下载：37/0 | 提交时间：2012/06/06

image recognition automatic target detection wavelet multiresolution analysis edge detection sea-level line

Visualization of a Turbulent Jet Using Wavelets 期刊论文 OAI收割
JOURNAL OF THERMAL SCIENCE, 2001, 卷号: 10, 期号: 3, 页码: 211,217
Hui LI

收藏 | 浏览/下载：12/0 | 提交时间：2013/03/12

digital image processing multiresolution image analysis orthogonal wavelet transform turbulent jet vortex.

A novel wavelet transform-based fusion method for remote sensing image processing 会议论文 OAI收割
Data Mining and Applications, Bellingham
Qu, JS; Wang, C

收藏 | 浏览/下载：12/0 | 提交时间：2014/12/07

data fusion multiresolution analysis wavelet transform wavelet package MULTIRESOLUTION