中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [2]
高能物理研究所 [1]
工程热物理研究所 [1]
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OAI收割 [4]
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会议论文 [2]
期刊论文 [2]
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2011 [2]
2006 [2]
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An improved destripe noises method for TDI-CCD images (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者:
He B.
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浏览/下载:22/0
  |  
提交时间:2013/03/25
The new destriping method using lifting wavelet transform by means of the improved threshold function is presented in this letter. It can overcome the deficiency of the hard and soft threshold function. As compared with the known threshold functions
the quality of the denoised images using the improved threshold function is much better. The results based on several image quality indexes present that the destriped images are not only visually more plausible but also suitable for analysis. Also it is reasonable in computer time and storage space to use the lifting wavelet transform. 2011 IEEE.
Unsteady Flow Field under Surge and Rotating Stall in a Three-stage Axial Flow Compressor
期刊论文
OAI收割
JOURNAL OF THERMAL SCIENCE, 2011, 卷号: 20, 期号: 1, 页码: 6,12
Takayuki HARA1
;
Daisuke MORITA1
;
Yutaka OHTA 2
;
Eisuke OUTA2
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浏览/下载:19/0
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提交时间:2012/12/11
Axial flow compressor
Surge
Rotating stall
Stall cell
Wavelet 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.
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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.
fMRI time series analysis based on stationary wavelet and spectrum analysis
期刊论文
OAI收割
Progress in Natural Science, 2006, 期号: 11, 页码: 1171-1176
作者:
Zhi LH(支联合)
;
ZHAO,Xia
;
Dan BC(单保慈)
;
PENG,Silong
;
YAN,Qiang
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浏览/下载:21/0
  |  
提交时间:2015/12/07
fMRI stationary wavelet transform spectrum analysis data analysis.