In this article, we present a three-dimensional visualization technique that has been developed in order to establish an interactive immersive environment to visualize the particles in granular materials and dislocati...In this article, we present a three-dimensional visualization technique that has been developed in order to establish an interactive immersive environment to visualize the particles in granular materials and dislocations in crystals. Simple elementary objects often exhibit complex collective behavior. Understanding of such behaviors and developments of coarse-scale theories, often requires insight into collective behavior that can only be obtained through immersive visualization. By displaying the computational results in a virtual environment with three-dimensional perception, one can immerse inside the model and analyze the intricate and very complex behavior of individual particles and dislocations. We built the stereographic images of the models using OpenGL rendering technique and then combine with the Virtual Reality technology in order to immerse in the three-dimensional model. A head mounted display has been used to allow the user to immerse inside the models and a flock of birds tracking device that allows the movements around and within the immersive environment.展开更多
Study on 3D terrain visualization is a hot research topic in GIS, virtual reality, computer graphics, digital photogrammetry and other fields, is also an important part of the digital earth strategy. Try to take advan...Study on 3D terrain visualization is a hot research topic in GIS, virtual reality, computer graphics, digital photogrammetry and other fields, is also an important part of the digital earth strategy. Try to take advantage of IDL data processing and graphic display function and ArcEngine spatial analysis function, in the Visual c# under the environment of hybrid programming mechanism, use of component design and development of integrated development technologies analysis of terrain visualization application operating environment, realized the 3D digital terrain expression and spatial analysis function. The results show that the IDL and ArcEngine integrated development method applied to the 3D terrain visualization analysis software platform developed operability and extension force with strong, both in terms of space efficiency and image data analysis , development costs advantages.展开更多
机器臂存在结构复杂、真实设备成本昂贵、实验条件受限等问题。在机械臂的设计研究中,可视化仿真系统作为一种安全灵活的工具,发挥着非常重要的作用,并广泛应用于机械臂设计和开发的各阶段。利用专业建模软件3D Studio MAX建立机械臂三...机器臂存在结构复杂、真实设备成本昂贵、实验条件受限等问题。在机械臂的设计研究中,可视化仿真系统作为一种安全灵活的工具,发挥着非常重要的作用,并广泛应用于机械臂设计和开发的各阶段。利用专业建模软件3D Studio MAX建立机械臂三维模型及场景,然后转换为OpenGL可以识别的3DS模型数据格式。在Visual C++开发环境中完成3DS模型数据的读取,结合OpenGL进行机械臂三维模型的重绘。根据机械臂D-H参数完成的机械臂正逆运动学求解算法,可以嵌入基于OpenGL的空间机械臂三维仿真系统中完成机械臂的运动控制和路径规划。实验结果表明,在Windows环境下以Visual C++结合OpenGL技术进行机械臂三维重构可视化研究,便于嵌入用户控制算法,可为机械臂的运动控制和路径规划研究提供依据。展开更多
3D terrain visualization of geographic information systems(GIS)data has become an important issue in recent years.This is due to the emergence of new geo-browsers such as Google Earth,widely popular among users.The av...3D terrain visualization of geographic information systems(GIS)data has become an important issue in recent years.This is due to the emergence of new geo-browsers such as Google Earth,widely popular among users.The availability of 3D representation tools has increased the demand for 3D terrain visualization.The aim of this paper is to review the literature related to the 3D terrain visualization of GIS data from the first map produced until the online mapping era.The reviews are divided into four different sections:manual visualization of 3D terrain,automated visualization of 3D terrain,online visualization of 3D terrain,and software for visualizing 3D terrain.Then,the paper compares between the different types of systems developed by various authors based on the capabilities and the limitations of the system.Some of the techniques have their own strengths and limitations which solve the problem in 3D terrain visualization.However,the research on improving 3D terrain visualization is still ongoing.This is due to the popularity of online environments and mobile devices that render 3D terrain.This review paper will help interested users understand the current state of 3D terrain visualization of GIS data in a better way.展开更多
文摘In this article, we present a three-dimensional visualization technique that has been developed in order to establish an interactive immersive environment to visualize the particles in granular materials and dislocations in crystals. Simple elementary objects often exhibit complex collective behavior. Understanding of such behaviors and developments of coarse-scale theories, often requires insight into collective behavior that can only be obtained through immersive visualization. By displaying the computational results in a virtual environment with three-dimensional perception, one can immerse inside the model and analyze the intricate and very complex behavior of individual particles and dislocations. We built the stereographic images of the models using OpenGL rendering technique and then combine with the Virtual Reality technology in order to immerse in the three-dimensional model. A head mounted display has been used to allow the user to immerse inside the models and a flock of birds tracking device that allows the movements around and within the immersive environment.
文摘Study on 3D terrain visualization is a hot research topic in GIS, virtual reality, computer graphics, digital photogrammetry and other fields, is also an important part of the digital earth strategy. Try to take advantage of IDL data processing and graphic display function and ArcEngine spatial analysis function, in the Visual c# under the environment of hybrid programming mechanism, use of component design and development of integrated development technologies analysis of terrain visualization application operating environment, realized the 3D digital terrain expression and spatial analysis function. The results show that the IDL and ArcEngine integrated development method applied to the 3D terrain visualization analysis software platform developed operability and extension force with strong, both in terms of space efficiency and image data analysis , development costs advantages.
文摘机器臂存在结构复杂、真实设备成本昂贵、实验条件受限等问题。在机械臂的设计研究中,可视化仿真系统作为一种安全灵活的工具,发挥着非常重要的作用,并广泛应用于机械臂设计和开发的各阶段。利用专业建模软件3D Studio MAX建立机械臂三维模型及场景,然后转换为OpenGL可以识别的3DS模型数据格式。在Visual C++开发环境中完成3DS模型数据的读取,结合OpenGL进行机械臂三维模型的重绘。根据机械臂D-H参数完成的机械臂正逆运动学求解算法,可以嵌入基于OpenGL的空间机械臂三维仿真系统中完成机械臂的运动控制和路径规划。实验结果表明,在Windows环境下以Visual C++结合OpenGL技术进行机械臂三维重构可视化研究,便于嵌入用户控制算法,可为机械臂的运动控制和路径规划研究提供依据。
文摘3D terrain visualization of geographic information systems(GIS)data has become an important issue in recent years.This is due to the emergence of new geo-browsers such as Google Earth,widely popular among users.The availability of 3D representation tools has increased the demand for 3D terrain visualization.The aim of this paper is to review the literature related to the 3D terrain visualization of GIS data from the first map produced until the online mapping era.The reviews are divided into four different sections:manual visualization of 3D terrain,automated visualization of 3D terrain,online visualization of 3D terrain,and software for visualizing 3D terrain.Then,the paper compares between the different types of systems developed by various authors based on the capabilities and the limitations of the system.Some of the techniques have their own strengths and limitations which solve the problem in 3D terrain visualization.However,the research on improving 3D terrain visualization is still ongoing.This is due to the popularity of online environments and mobile devices that render 3D terrain.This review paper will help interested users understand the current state of 3D terrain visualization of GIS data in a better way.
