Background Large screen visualization sys tems have been widely utilized in many industries.Such systems can help illustrate the working states of different production systems.However,efficient interaction with such s...Background Large screen visualization sys tems have been widely utilized in many industries.Such systems can help illustrate the working states of different production systems.However,efficient interaction with such systems is still a focus of related research.Methods In this paper,we propose a touchless interaction system based on RGB-D camera using a novel bone-length constraining method.The proposed method optimizes the joint data collected from RGB-D cameras with more accurate and more stable results on very noisy data.The user can customize the system by modifying the finite-state machine in the system and reuse the gestures in multiple scenarios,reducing the number of gestures that need to be designed and memorized.Results/Conclusions The authors tested the system in two cases.In the first case,we illustrated a process in which we improved the gesture designs on our system and tested the system through user study.In the second case,we utilized the system in the mining industry and conducted a user study,where users say that they think the system is easy to use.展开更多
Ultrathin free-standing graphene oxide（GO） films were fabricated by vacuum filtration method assisted with Ni（OH）2 nanosheets as the sacrifice layer. The surface of the obtained GO film is very clean as the Ni（OH...Ultrathin free-standing graphene oxide（GO） films were fabricated by vacuum filtration method assisted with Ni（OH）2 nanosheets as the sacrifice layer. The surface of the obtained GO film is very clean as the Ni（OH）2 nanosheets can be thoroughly etched by HCl. The thickness of the GO films can be well-controlled by changing the volume of GO dispersion,and the thinnest GO film reached -12 nm. As a novel and transparent dielectric material, the GO film has been applied as the dielectric layer for the flexible touchless capacitive sensor which can effectively distinguish the approaching of an insulator or a conductor.展开更多
基金the National Key Research and Development Project of China(2017 YFC 0804401)National Natural Science Foundation of China(U 1909204).
文摘Background Large screen visualization sys tems have been widely utilized in many industries.Such systems can help illustrate the working states of different production systems.However,efficient interaction with such systems is still a focus of related research.Methods In this paper,we propose a touchless interaction system based on RGB-D camera using a novel bone-length constraining method.The proposed method optimizes the joint data collected from RGB-D cameras with more accurate and more stable results on very noisy data.The user can customize the system by modifying the finite-state machine in the system and reuse the gestures in multiple scenarios,reducing the number of gestures that need to be designed and memorized.Results/Conclusions The authors tested the system in two cases.In the first case,we illustrated a process in which we improved the gesture designs on our system and tested the system through user study.In the second case,we utilized the system in the mining industry and conducted a user study,where users say that they think the system is easy to use.
基金supported by the National Natural Science Foundation of China(No.61574163)the Foundation Research Project of Jiangsu Province(Nos.BK20160392,BK20170008)
文摘Ultrathin free-standing graphene oxide（GO） films were fabricated by vacuum filtration method assisted with Ni（OH）2 nanosheets as the sacrifice layer. The surface of the obtained GO film is very clean as the Ni（OH）2 nanosheets can be thoroughly etched by HCl. The thickness of the GO films can be well-controlled by changing the volume of GO dispersion,and the thinnest GO film reached -12 nm. As a novel and transparent dielectric material, the GO film has been applied as the dielectric layer for the flexible touchless capacitive sensor which can effectively distinguish the approaching of an insulator or a conductor.
