By generating a high accuracy and high resolution geological model in Liuchu oil field, the technique of geological modeling is expanded and involved in primary geological study, making the sand bodies and reservoir b...By generating a high accuracy and high resolution geological model in Liuchu oil field, the technique of geological modeling is expanded and involved in primary geological study, making the sand bodies and reservoir be easily described in detail. The 3D visualization and 3D interactive editing of geological structure model are the key for modeling procedure. And a high accuracy and resolution geological model has been well applied in optimizing the production scheme.展开更多
为解决水电工程科技成果传统二维表达模式存在的学习难、解读难、查阅难等问题,分析了水电工程科技成果传统的纸质承载形式在信息传递与表达上的局限性,提出基于BIM(Building Information Modeling)的水电工程科技成果可视化概念。应用...为解决水电工程科技成果传统二维表达模式存在的学习难、解读难、查阅难等问题,分析了水电工程科技成果传统的纸质承载形式在信息传递与表达上的局限性,提出基于BIM(Building Information Modeling)的水电工程科技成果可视化概念。应用场景还原技术、三维模拟技术与三维互动技术,对水电工程施工对象建立数字化模型,实现了科技成果施工工艺、施工过程的可视化仿真,以及虚拟施工对象的全方位、多角度浏览互动,在短时间内大量、精确传递科技成果信息,赋予科技成果全新的、高效的学习体验,同时也有利于科技成果的评审鉴定和转化推广。展开更多
In the majority of the interaction process, the operator often focuses on the tracked 3D hand gesture model at the ＂interaction points＂ in the collision detectionscene, such as ＂grasp＂ and ＂release＂ and objects ...In the majority of the interaction process, the operator often focuses on the tracked 3D hand gesture model at the ＂interaction points＂ in the collision detectionscene, such as ＂grasp＂ and ＂release＂ and objects in the scene, without paying attention to the tracked 3D hand gesture model in the total procedure. Thus in this paper, a visual attention distribution model of operator in the ＂grasp＂, ＂translation＂, ＂release＂ and other basic operation procedures is first studied and a 3D hand gesture tracking algorithm based on this distribution model is proposed. Utilizing the algorithm, in the period with a low degree of visual attention, a pre-stored 3D hand gesture animation can be used to directly visualise a 3D hand gesture model in the interactive scene; in the time period with a high degree of visual attention, an existing ＂frame-by-frame tracking＂ approach can be adopted to obtain a 3D gesture model. The results demonstrate that the proposed method can achieve real-time tracking of 3D hand gestures with an effective improvement on the efficiency, fluency, and availability of 3D hand gesture interaction.展开更多
文摘By generating a high accuracy and high resolution geological model in Liuchu oil field, the technique of geological modeling is expanded and involved in primary geological study, making the sand bodies and reservoir be easily described in detail. The 3D visualization and 3D interactive editing of geological structure model are the key for modeling procedure. And a high accuracy and resolution geological model has been well applied in optimizing the production scheme.
文摘为解决水电工程科技成果传统二维表达模式存在的学习难、解读难、查阅难等问题,分析了水电工程科技成果传统的纸质承载形式在信息传递与表达上的局限性,提出基于BIM(Building Information Modeling)的水电工程科技成果可视化概念。应用场景还原技术、三维模拟技术与三维互动技术,对水电工程施工对象建立数字化模型,实现了科技成果施工工艺、施工过程的可视化仿真,以及虚拟施工对象的全方位、多角度浏览互动,在短时间内大量、精确传递科技成果信息,赋予科技成果全新的、高效的学习体验,同时也有利于科技成果的评审鉴定和转化推广。
基金Supported by the National Natural Science Foundation of China(61472163)the National Key Research&Development Plan of China(2016YFB1001403)the Science and Technology Project of Shandong Province(2015GGX101025)
文摘In the majority of the interaction process, the operator often focuses on the tracked 3D hand gesture model at the ＂interaction points＂ in the collision detectionscene, such as ＂grasp＂ and ＂release＂ and objects in the scene, without paying attention to the tracked 3D hand gesture model in the total procedure. Thus in this paper, a visual attention distribution model of operator in the ＂grasp＂, ＂translation＂, ＂release＂ and other basic operation procedures is first studied and a 3D hand gesture tracking algorithm based on this distribution model is proposed. Utilizing the algorithm, in the period with a low degree of visual attention, a pre-stored 3D hand gesture animation can be used to directly visualise a 3D hand gesture model in the interactive scene; in the time period with a high degree of visual attention, an existing ＂frame-by-frame tracking＂ approach can be adopted to obtain a 3D gesture model. The results demonstrate that the proposed method can achieve real-time tracking of 3D hand gestures with an effective improvement on the efficiency, fluency, and availability of 3D hand gesture interaction.
