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Analysis of the Pencil of Conics with Double Complex Contact and Its Application to Camera Calibration被引量：1
《Journal of Shanghai Jiaotong university(Science)》2013年第1期1-6,共6页蔡琴 王宸昊 阎炎 刘允才 
the National Basic Research Program (973) of China(No.2011CB302203);the National Natural Science Foundation of China(No.60833009)
In this paper, we introduce a novel class of coplanar conics, the pencil of which can doubly contact to calibrate camera and estimate pose. We first analyze the properties of con-axes and con-eccentricity ellipses, wh...
关键词：camera calibration HOMOGRAPHY con-axes and con-eccentricity ellipse concentric circle polynomial optimization problem （POP） 
Enhanced Field Emission from Large-Area Arrays of WlsO49 Pencil-Like Nanostructure被引量：1
《Chinese Physics Letters》2010年第6期262-265,共4页LI Zheng-Lin DENG Shao-Zhi XU Ning-Sheng LIU Fei CHEN Jun 
Supported by the National Natural Science Foundation of China under Grant Nos 50725206,50802117,U0634002 and 50672135;the National Basic Research Program of China under Grant Nos 2003CB314701,2007CB935501 and 2010CB327703;the National High-Tech Research and Development Program of China under Grant No2008AA03A314;the Doctoral Foundation of Education Ministry of China under Grant No 20070558063;the Science and Technology Department of Guangdong Province;the Department of Information Industry of Guangdong Province;the Science and Technology Department of Guangzhou City.
Field enhancement and field screening are two major factors affecting field emission performance of arrays of quasi one-dimensional nanostruetures. We have observed enhanced field emission from large-area arrays of W1...
A new method for designing a developable surface utilizing the surface pencil through a given curve被引量：8
《Progress in Natural Science:Materials International》2008年第1期105-110,共6页Hongyan Zhao Guojin Wang 
This work was supported by the National Basic Research Program of China(Grant No.2004CB719400);National Natural Science Foundation of China(Grant Nos.60673031,60333010,and 60021201).
This paper proposes a new method for designing a developable surface by constructing a surface pencil passing through a given curve, which is quite in accord with the practice in industry design and manufacture. By ut...
关键词：CAD/CAM Developable surface GEODESIC Frenet frame 
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