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Study on the Matching Algorithm and 3D Virtual Reality System Based on SilverLight
Hou Zhenjie,Lu Zhongqiu,Yuan Dezheng 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.1
Silverlight technology is a new generation of rich internet application technology. The paper proposes a new solution based on the Silverlight technology to achieve a 3D virtual reality system which takes the pictures around the objects with 360 degree displaying in the local computer or a web page. The 3D visual sense and image matching of this system are the key technical problems. The automatic matching technology in image synthesis field plays a very important role in the system. Based on the SURF algorithm, this paper takes strategies of density threshold suppression to reduce the number of matched feature points; using the quasi Euclidean distance to complete the feature points matching process, the improved algorithm also greatly reduces the matching time of feature points and improves the matching accuracy. Through theoretical analysis and experimental contrast, demonstrates the reliability and validity of the algorithm.
Junxia Cheng,Zhenjie Lu,Xuefei Zhao,Xingxing Chen,Yaming Zhu,Hongyu Chu 한국탄소학회 2021 Carbon Letters Vol.31 No.1
The porous carbons with high specific surface area and excellent electrochemical properties were prepared using three types of green needle coke as raw materials. Electrochemical performances of the porous carbons derived from different microstructure green needle coke were investigated. The XRD and Raman spectra demonstrated that the content of the ordered carbon microcrystals were decreased and the content of amorphous and cross-linked structure were increased in the porous carbons with comparison to the raw materials. The results of N2 adsorption–desorption analysis verified that the content of ordered microcrystalline structure in the raw materials evidently influence the specific surface area and pore size distribution of the porous carbons. The porous carbon with 1665 m2 g?1 specific surface area and 2.89 nm average pore size has shown that the specific capacitance was 288 F g?1 at the current density 1 A g?1. Furthermore, the capacity retention was 94.93% and the Coulombic efficiency was 92.87% after 5000 charge/discharge cycles.