Virtual heritage has become increasingly important in the conservation, preservation, and interpretation of our cultural and natural history. Moreover, rapid advances in digital technologies in recent years offer virt...Virtual heritage has become increasingly important in the conservation, preservation, and interpretation of our cultural and natural history. Moreover, rapid advances in digital technologies in recent years offer virtual heritage new direction. This paper introduces our approach toward a networked 3D virtual museum system, especially, how to model, manage, present virtual heritages and furthermore how to use computer network for the share of virtual heritage in the networked virtual environment. This paper first addresses a 3D acquisition and processing technique for virtual heritage modeling and shows some illustrative examples. Then, this paper describes a management of virtual heritage assets that are composed by various rich media. This paper introduces our schemes to present the virtual heritages, which include 3D virtual heritage browser system, CAVE system, and immersive VR theater. Finally, this paper presents the new direction of networked 3D virtual museum of which main idea is remote guide of the virtual heritage using the mixed reality technique.展开更多
文摘Virtual heritage has become increasingly important in the conservation, preservation, and interpretation of our cultural and natural history. Moreover, rapid advances in digital technologies in recent years offer virtual heritage new direction. This paper introduces our approach toward a networked 3D virtual museum system, especially, how to model, manage, present virtual heritages and furthermore how to use computer network for the share of virtual heritage in the networked virtual environment. This paper first addresses a 3D acquisition and processing technique for virtual heritage modeling and shows some illustrative examples. Then, this paper describes a management of virtual heritage assets that are composed by various rich media. This paper introduces our schemes to present the virtual heritages, which include 3D virtual heritage browser system, CAVE system, and immersive VR theater. Finally, this paper presents the new direction of networked 3D virtual museum of which main idea is remote guide of the virtual heritage using the mixed reality technique.
文摘为探究岩溶关键带碳循环机制,揭示洞穴通风对洞穴环境变化的响应机制,在2018年国庆期间对贵州绥阳大风洞洞内空气环境指标(温度、湿度、CO 2浓度)和滴水水化学指标(温度,pH值,EC,Ca 2+,HCO-3)进行为期7 d的连续自动监测,并运用系统分析方法对各要素进行了综合分析。结果表明:(1)受游客数量、洞道结构的影响,洞穴空气CO 2浓度表现出明显的昼夜变化特征;与2#(神泉玉露)点相比,1#(夜明珠)点位于大风洞主洞道,洞腔体积较大,洞道较宽,洞穴空气CO 2浓度增加幅度及变化幅度表现为2#>1#。(2)洞穴通风效应与洞穴滴水水化学相关性显著。洞穴通风与lg P CO 2(w)呈反相关,与pH值,SIc和SId为正相关;受监测点洞道结构、通风效应和滴水水量的影响,洞穴通风与1#点的Ca 2+和HCO-3浓度变化呈反相关关系,与2#点的相关性不显著。(3)不同通风模式下,不同监测点的水气CO 2分压差及沉积环境存在差异。当ΔT v>0时,洞穴属于积极通风状态,洞穴空气CO 2浓度降低,ΔP CO 2>0,有利于洞穴景观的沉积;反之,洞穴沉积物趋向于产生溶蚀作用。