中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Highly efficient iridium(III) phosphors with phenoxy-substituted ligands and their high-performance OLEDs 期刊论文  OAI收割
journal of materials chemistry c, 2013, 卷号: 1, 期号: 4, 页码: 808-821
Tan GP; Chen SM; Sun N; Li YH; Fortin D; Wong WY; Kwok HS; Ma DG; Wu HB; Wang LX; Harvey PD
收藏  |  浏览/下载:40/0  |  提交时间:2014/04/18
A simple and fast moving object segmentation based on H.264 compressed domain information (EI CONFERENCE) 会议论文  OAI收割
4th International Conference on Computational and Information Sciences, ICCIS 2012, August 17, 2012 - August 19, 2012, Chongqing, China
作者:  
Chen X.;  Chen X.;  Chen X.;  Sun L.
收藏  |  浏览/下载:14/0  |  提交时间:2013/03/25
Density functional study on chirospectra of bruguierols 期刊论文  OAI收割
Acta Physica Sinica, 2011, 卷号: 60, 期号: 4
C. Y. Mang; G. Z. Gou; C. P. Liu; K. C. Wu
收藏  |  浏览/下载:31/0  |  提交时间:2012/06/06
Design and simulation of CMOS star sensor lens with large relative aperture and wide field (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
Zhong X.; Jin G.
收藏  |  浏览/下载:59/0  |  提交时间:2013/03/25
A 50mm focal length  F/1.25  Gaussian type optical system is designed in this paper  which has 20field of view. Actual star image adding optical cross-talk effect of CMOS(Complementary Metal Oxide Semiconductor)  detector is simulated by non-sequential ray tracing in ZEMAX optical design and analysis software to evaluate its performance. The distortion relative to image spot centriod is introduced and calculated by simulated star images  which is less than 0.03% of lens in this paper. Thermal adaptability is discussed by opt-mechanic thermal analysis  which shows the RMS spot radius of marginal filed changes less than 0.7m under 10C temperature gradient  and changes less than 1m during homogeneous temperature changing from 40C to 40C. The results of analyses and simulations show the design of this lens can achieve the requirement of high precision CMOS star sensor well. 2011 IEEE.  
Synthesis, Light-Emitting, and Two-Photon Absorption Properties of Platinum-Containing Poly(arylene-ethynylene)s Linked by 1,3,4-Oxadiazole Units 期刊论文  OAI收割
macromolecules, 2010, 卷号: 43, 期号: 19, 页码: 7936-7949
Goudreault T; He Z; Guo Y; Ho CL; Zhan HM; Wang QW; Ho KYF; Wong KL; Fortin D; Yao B; Xie ZY; Wang LX; Kwok WM; Harvey PD; Wong WY
收藏  |  浏览/下载:19/0  |  提交时间:2012/04/25
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.
收藏  |  浏览/下载:34/0  |  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.  
APPROXIMATION OF AN ARBITRARY FILTER AND ITS RECURSIVE IMPLEMENTATION 期刊论文  OAI收割
PATTERN RECOGNITION, 1994, 卷号: 27, 期号: 12, 页码: 1767-1774
作者:  
LI, BC;  DEMA, S
  |  收藏  |  浏览/下载:41/0  |  提交时间:2018/10/10