In recent years,the concept of digital human has attracted widespread attention from all walks of life,and the modelling of high-fidelity human bodies,heads,and hands has been intensively studied.This paper focuses on...In recent years,the concept of digital human has attracted widespread attention from all walks of life,and the modelling of high-fidelity human bodies,heads,and hands has been intensively studied.This paper focuses on head modelling and proposes a generic head parametric model based on neural radiance fields.Specifically,we first use face recognition networks and 3D facial expression database FaceWarehouse to parameterize identity and expression semantics,respectively,and use both as conditional inputs to build a neural radiance field for the human head,thereby improving the head model’s representation ability while ensuring editing capabilities for the identity and expression of the rendered results;then,through a combination of volume rendering and neural rendering,the 3D representation of the head is rapidly rendered into the 2D plane,producing a high-fidelity image of the human head.Thanks to the well-designed loss functions and good implicit representation of the neural radiance field,our model can not only edit the identity and expression independently,but also freely modify the virtual camera position of the rendering results.It has excellent multi-view consistency,and has many applications in novel view synthesis,pose driving and more.展开更多
基于“制度−文化”的耦合视角检索了2000—2024年中国知网(CNKI)与Web of Science核心数据库的中国乡村旅游发展研究文献,运用CiteSpace文献计量工具,梳理了中国乡村旅游发展研究演进过程,比较分析了中国乡村旅游发展在国内与国际不同...基于“制度−文化”的耦合视角检索了2000—2024年中国知网(CNKI)与Web of Science核心数据库的中国乡村旅游发展研究文献,运用CiteSpace文献计量工具,梳理了中国乡村旅游发展研究演进过程,比较分析了中国乡村旅游发展在国内与国际不同语境下的研究阶段、热点主题及方法论方面的差异与共性。研究发现:①中、英文语境下该研究均呈现热度攀升趋势,但阶段特征分化明显:国内研究受政策驱动,围绕乡村振兴、文旅融合、共同富裕等议题形成实践导向型框架;而国际上更加关注可持续性、社区赋权与乡村绅士化等微观议题,主要体现批判性视角;②制度与文化的动态互构是乡村旅游发展的核心逻辑。国内中文语境下研究强调政策刚性对文化资本化的赋能作用,国际英文语境下研究则聚焦全球化背景下文化原真性与制度权力的博弈;③方法论存在显著差异。国内研究偏重政策验证与定量分析,聚焦乡村旅游产业发展;而在国际上研究则以质性解构为主,将更多视角投射到与乡村旅游相关的社区及人的探讨。未来乡村旅游研究应考虑从理论整合与框架创新、方法论创新、主题深化与拓展3个方面进行深入探讨。展开更多
文摘In recent years,the concept of digital human has attracted widespread attention from all walks of life,and the modelling of high-fidelity human bodies,heads,and hands has been intensively studied.This paper focuses on head modelling and proposes a generic head parametric model based on neural radiance fields.Specifically,we first use face recognition networks and 3D facial expression database FaceWarehouse to parameterize identity and expression semantics,respectively,and use both as conditional inputs to build a neural radiance field for the human head,thereby improving the head model’s representation ability while ensuring editing capabilities for the identity and expression of the rendered results;then,through a combination of volume rendering and neural rendering,the 3D representation of the head is rapidly rendered into the 2D plane,producing a high-fidelity image of the human head.Thanks to the well-designed loss functions and good implicit representation of the neural radiance field,our model can not only edit the identity and expression independently,but also freely modify the virtual camera position of the rendering results.It has excellent multi-view consistency,and has many applications in novel view synthesis,pose driving and more.
文摘基于“制度−文化”的耦合视角检索了2000—2024年中国知网(CNKI)与Web of Science核心数据库的中国乡村旅游发展研究文献,运用CiteSpace文献计量工具,梳理了中国乡村旅游发展研究演进过程,比较分析了中国乡村旅游发展在国内与国际不同语境下的研究阶段、热点主题及方法论方面的差异与共性。研究发现:①中、英文语境下该研究均呈现热度攀升趋势,但阶段特征分化明显:国内研究受政策驱动,围绕乡村振兴、文旅融合、共同富裕等议题形成实践导向型框架;而国际上更加关注可持续性、社区赋权与乡村绅士化等微观议题,主要体现批判性视角;②制度与文化的动态互构是乡村旅游发展的核心逻辑。国内中文语境下研究强调政策刚性对文化资本化的赋能作用,国际英文语境下研究则聚焦全球化背景下文化原真性与制度权力的博弈;③方法论存在显著差异。国内研究偏重政策验证与定量分析,聚焦乡村旅游产业发展;而在国际上研究则以质性解构为主,将更多视角投射到与乡村旅游相关的社区及人的探讨。未来乡村旅游研究应考虑从理论整合与框架创新、方法论创新、主题深化与拓展3个方面进行深入探讨。
