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Preparation of Reversible Colorimetric Temperature Nanosensors and Their Application in Quantitative Two-Dimensional Thermo-Imaging 期刊论文
2011
Wang, Xu-dong; Song, Xin-hong; He, Chun-yan（ Fuzhou Univ, Dept Chem）; Yang, Chaoyong James; 杨朝勇; Chen, Guonan（ Fuzhou Univ, Dept Chem）; Chen, Xi; 陈曦
收藏  |  浏览/下载：1/0  |  提交时间：2012/03/13
Efficient multi-reference frame selection algorithm for hierarchical B pictures in multiview video coding 期刊论文
IEEE TRANSACTIONS ON BROADCASTING, 2011, 卷号: 57, 期号: 1, 页码: 15-23
作者:  Zhang, Yun;  Kwong, Sam;  Jiang, Gangyi;  Wang, Hanli
收藏  |  浏览/下载：38/0  |  提交时间：2015/08/25
Design of motion compensation mechanism of satellite remote sensing camera (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu S.; Yan Y.; Xu K.; Jin G.
收藏  |  浏览/下载：37/0  |  提交时间：2013/03/25
With the development of aerospace remote sensing technology  the ground resolution of remote sensing camera enhances continuously. Since there is relative motion between camera and ground target when taking pictures  the target image recorded in recording media is moved and blurred. In order to enhance the imaging quality and resolution of the camera  the image motion had to be compensated. In order to abate the effect of image motion to image quality of space camera and improve the resolution of the camera  the compensation method of image motion to space camera is researched. First  the reason of producing drift angle and adjustment principle are analyzed in this paper. This paper introduce the composition and transmission principle of image motion compensation mechanism. Second  the system adopts 80C31 as controller of drift angle  and adopts stepping motor for actuators  and adopts absolute photoelectric encoder as the drift Angle measuring element. Then the control mathematical model of the image motion compensation mechanism are deduced  and it achieve the closed-loop control of the drift angle position. At the last  this paper analyses the transmission precision of the mechanism. Through the experiment  we measured the actual precision of the image motion compensation mechanism  and compared with the theoretical analysis. There are two major contributions in this paper. First  the traditional image motion compensation mechanism is big volume and quality heavy. This has not fit for the development trend of space camera miniaturization and lightweight. But if reduce the volume and quality of mechanism  it will bring adverse effects for the precision and stiffness of mechanism. For this problem  This paper designed a image motion compensation that have some advantages such as small size  light weight at the same time  high precision  stiffness and so on. This image motion compensation can be applicable to the small optics cameras with high resolution. Second  the traditional mechanism control need to corrected  fitting and iterative for the control formula of mechanism. Only in this way  we can get the optimal control mathematical model. This paper has high precision of the control formula derived. It can achieve the high precision control without fitting  It also simplify the difficulty of control mathematical model establishment. This paper designed the range of adjusting of image motion compensation mechanism between -5 +5. Based on choosing-5  -4  -3  -2  -1  0  +1  +2  +3  +4  +4 as the expectation value of the imaginary drift angle  we get ten groups of the fact data in adjusting drift angle measured. The test results show that the precision of the drift angle control system can be achieved in 1. It can meet the system requirements that the precision of the control system is less than 3'  and it can achieve the high-precision image motion compensation. 2011 SPIE.  
Advanced spatial and Temporal Direct Mode for B picture coding 其他
2011-01-01
Wang, Yue; Zhang, Li; Ma, Siwei; Gao, Wen
收藏  |  浏览/下载：3/0  |  提交时间：2015/11/17
Improvement of amorphous silicon n-i-p solar cells by incorporating double-layer hydrogenated nanocrystalline silicon structure 期刊论文
journal of non-crystalline solids, 2011, 卷号: 357, 期号: 1, 页码: 121-125
作者:  Wang C
收藏  |  浏览/下载：69/3  |  提交时间：2011/07/05
Strain-induced high ferromagnetic transition temperature of MnAs epilayer grown on GaAs (110) 期刊论文
nanoscale research letters, 2011, 卷号: 6, 页码: article no.125
作者:  Chen L
收藏  |  浏览/下载：36/1  |  提交时间：2011/07/05
Strong up-conversion emissions in ZnO:Er3+, ZnO:Er3+-Yb3+ nanoparticles and their surface modified counterparts 期刊论文
journal of colloid and interface science, 2011, 卷号: 358, 期号: 2, 页码: 334-337
作者:  Li JB
收藏  |  浏览/下载：54/5  |  提交时间：2011/07/05
Improved tunneling magnetoresistance in (Ga,Mn)As/AlO(x)/CoFeB magnetic tunnel junctions 期刊论文
applied physics letters, 2011, 卷号: 98, 期号: 26, 页码: 262501
Yu GQ; Chen L; Rizwan S; Zhao JH; Xu K; Han XF
收藏  |  浏览/下载：36/0  |  提交时间：2012/01/06
Study on Optical Properties of Type-II SnO2/ZnS Core/Shell Nanowires 期刊论文
journal of physical chemistry c, 2011, 卷号: 115, 期号: 15, 页码: 7225-7229
作者:  Li JB
收藏  |  浏览/下载：37/2  |  提交时间：2011/07/05
Measurement of wurtzite ZnO/rutile TiO2 heterojunction band offsets by x-ray photoelectron spectroscopy 期刊论文
applied physics a-materials science & processing, 2011, 卷号: 103, 期号: 4, 页码: 1099-1103
作者:  Wei HY
收藏  |  浏览/下载：59/8  |  提交时间：2011/07/05

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