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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]
自动化研究所 [2]
沈阳自动化研究所 [1]
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OAI收割 [5]
内容类型
会议论文 [3]
学位论文 [1]
期刊论文 [1]
发表日期
2012 [2]
2010 [1]
2006 [1]
2005 [1]
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便携式心电监护终端动态心电检测的研究
学位论文
OAI收割
工学硕士, 中国科学院自动化研究所: 中国科学院研究生院, 2012
施帆
收藏
  |  
浏览/下载:44/0
  |  
提交时间:2015/09/02
动态心电
便携式心电监护
心电检测
小波变换
自适应阈值判别
Dynamic ECG
Portable ECG monitor
Detection of DCG
Wavelet Transform
Adaptive-Thresholding
The Application of Wavelet-Based Contourlet Transform on Compressed Sensing
会议论文
OAI收割
2012 International Conference on Multimedia and Signal Processing, Shanghai, China, December 7-9, 2012
作者:
Du M(杜梅)
;
Zhao HC(赵怀慈)
;
Zhao CY(赵春阳)
;
Li B(李波)
收藏
  |  
浏览/下载:91/0
  |  
提交时间:2012/12/28
Sparse Representation
Wavelet-Based Contourlet Transform
Block Compressed Sensing
Iterative Hard Thresholding Algorithm
Electro-optical imaging system identification using pseudo-random binary pattern (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Le Y.
;
Jian W.
;
Jianzhong Z.
;
Qiang S.
;
Jianzhuo L.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/25
A method using pseudo-random binary pattern is developed for electro-optical imaging system identification. The imaging system is taken as a stable
linear
time-invariant
and causal filter
and its transfer function is measured through the pseudo-random binary sequence impulse responses identification. A digital mirror device (DMD) light projector is developed as the target generator
and wavelet thresholding is used to denoise the captured image. Pre-filtering spectral estimation algorithm with adaptive parameter selection is also proposed for the identification process
overcoming the challenge brought by the size limit derived from the optical isoplantic region. Simulations and experiments are presented to show the effectiveness of the proposed method.0-64. 2010 IEEE.
A new approach for the removal of mixed noise based on wavelet transform (EI CONFERENCE)
会议论文
OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Li Y.
;
Li Y.
;
Li Y.
;
Li Y.
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  |  
浏览/下载:38/0
  |  
提交时间:2013/03/25
This paper proposed a new approach for the removal of mixed noise. There are many different ways in image denoising. Donoho et al have proposed a method for image de-noising by thresholding
ambiguity is often resulted in determining the correspondence of a modulus maximum to a singularity. In the light
and indeed
we combine the merits of the two techniques to form a new approach for the removal of mixed noise. At first
the application of their method to image denoising has been extremely successful. But the method of Donoho is based on the assumption that the type of noise is only additive Gaussian noise
we used wavelet singularity detection (WSD) technique to analyze singularities of signal and noise. According to the characteristic that wavelet transform modulus maxima of impulse noise rapidly decreases as the scale increases in wavelet domain
which is not successful for impulse noise. Mallat has also presented a method for signal denoising by discriminating the noise and the signal singularities through an analysis of their wavelet transform modulus maxima (WTMM). Nevertheless
it can be accurately located with multiscale space by going through dyadic orthogonal wavelet transform and removed. Furthermore the Gaussian noise is also removed through a level-dependent thresholding algorithm
the tracing of WTMM is not just tedious procedure computationally
algorithm. The experimental results demonstrate that the proposed method can effectively detect impulse noise and remove almost all of the noise while preserve image details very well.
Color image denoising with wavelet thresholding based on human visual system model
期刊论文
OAI收割
SIGNAL PROCESSING-IMAGE COMMUNICATION, 2005, 卷号: 20, 期号: 2, 页码: 115-127
作者:
Huang, KQ
;
Wu, ZY
;
Fung, GSK
;
Chan, FHY
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2015/11/06
color image denoising
wavelet thresholding
human visual system model
contrast sensitivity function
masking