By considering an asymmetric thin-shell wormhole(ATSW)surrounded by an optically and geometrically thin disk,we investigate the luminosity distribution of this ATSW with the spacetime on two sides encoded with the ren...By considering an asymmetric thin-shell wormhole(ATSW)surrounded by an optically and geometrically thin disk,we investigate the luminosity distribution of this ATSW with the spacetime on two sides encoded with the renormalization group improved(RGI)parameters(Ω,γ).Although some light rays are absorbed into the throat in the vicinity of the wormhole,they return through the throat with certain conditions,unlike in the case of black holes.The spacetime on one side of the wormhole can capture the additional photons emitted from the thin disk,resulting in several interesting observable features of the wormhole.The results in this paper show that there are two additional orbit numbers n in the ATSW and six transfer functions,rather than three as in the black hole case.In this case,the ATSW indeed has a more complex observable structure,where some additional light rings arise naturally.For instance,there are two additional photon rings for the emitted Model 1.Moreover,we also find a new wide hump between the first and second additional photon rings in Model 2.The effects of Ω and γ on the observed images are clearly addressed throughout this study,and the influence of Ω is found to be larger.Finally,we conclude that the observations of the RGI-ATSW can help further distinguish it from other ATSWs and black holes when a thin accretion disk exists around it.展开更多
As the effective capture region of optical motion capture system is limited by quantity,installation mode,resolution and focus of infrared cameras,the reflective markers on certain body parts(such as wrists,elbows,etc...As the effective capture region of optical motion capture system is limited by quantity,installation mode,resolution and focus of infrared cameras,the reflective markers on certain body parts(such as wrists,elbows,etc.)of multi-actual trainees may be obscured when they perform the collaborative interactive operation.To address this issue,motion data compensation method based on the additional feature information provided by the electromagnetic spatial position tracking equipment is proposed in this paper.The main working principle and detailed realization process of the proposed method are introduced step by step,and the practical implementation is presented to illustrate its validity and efficiency.The results show that the missing capture data and motion information of relevant obscured markers on arms can be retrieved with the proposed method,which can avoid the simulation motions of corresponding virtual operators being interrupted and deformed during the collaborative interactive operation process performed by multiactual trainees with optical human motion capture system in a limited capture range.展开更多
基金Supported by the National Natural Science Foundation of China(11903025)the Science and Technology Program of Sichuan Province,China(2023ZYD0023)+2 种基金the Youth Science and Technology Innovation Research Team of Sichuan Province,China(21CXTD0038)the Natural Science Foundation of Sichuan Province,China(2022NSFSC1833)by the Central Guidance on the Local Science and Technology Development Fund of SiChuan Province,China(24ZYZYTS0188)。
文摘By considering an asymmetric thin-shell wormhole(ATSW)surrounded by an optically and geometrically thin disk,we investigate the luminosity distribution of this ATSW with the spacetime on two sides encoded with the renormalization group improved(RGI)parameters(Ω,γ).Although some light rays are absorbed into the throat in the vicinity of the wormhole,they return through the throat with certain conditions,unlike in the case of black holes.The spacetime on one side of the wormhole can capture the additional photons emitted from the thin disk,resulting in several interesting observable features of the wormhole.The results in this paper show that there are two additional orbit numbers n in the ATSW and six transfer functions,rather than three as in the black hole case.In this case,the ATSW indeed has a more complex observable structure,where some additional light rings arise naturally.For instance,there are two additional photon rings for the emitted Model 1.Moreover,we also find a new wide hump between the first and second additional photon rings in Model 2.The effects of Ω and γ on the observed images are clearly addressed throughout this study,and the influence of Ω is found to be larger.Finally,we conclude that the observations of the RGI-ATSW can help further distinguish it from other ATSWs and black holes when a thin accretion disk exists around it.
基金the project supported by the National Natural Science Foundation of China(Grant No.61702524)the Natural Science Foundation of Shaanxi Province(Grant No.2016JQ6052).
文摘As the effective capture region of optical motion capture system is limited by quantity,installation mode,resolution and focus of infrared cameras,the reflective markers on certain body parts(such as wrists,elbows,etc.)of multi-actual trainees may be obscured when they perform the collaborative interactive operation.To address this issue,motion data compensation method based on the additional feature information provided by the electromagnetic spatial position tracking equipment is proposed in this paper.The main working principle and detailed realization process of the proposed method are introduced step by step,and the practical implementation is presented to illustrate its validity and efficiency.The results show that the missing capture data and motion information of relevant obscured markers on arms can be retrieved with the proposed method,which can avoid the simulation motions of corresponding virtual operators being interrupted and deformed during the collaborative interactive operation process performed by multiactual trainees with optical human motion capture system in a limited capture range.
