With the rapid development of internet technology,some innovative fashion product are increasingly showed in the way of three-dimensional virtual display.Taking fashion jewelry as an example,the virtual 3D display met...With the rapid development of internet technology,some innovative fashion product are increasingly showed in the way of three-dimensional virtual display.Taking fashion jewelry as an example,the virtual 3D display method of product is studied by Inventor which is parametric 3D design software for efficient modeling and animation developed by the Autodesk Company.By discussing the methods of part feature creation and assembly design,the real simulation of the product is carried out.Three-dimensional animation techniques,such as fade animation,components animation and camera animation are used to depict product features and animation effects.展开更多
Background Computer Generated Animations(CGA),when applied to three-dimensional(3D)city models(3DCM),can be used as powerful tools to support urban decision-making.This leads to a new paradigm,based on procedural mode...Background Computer Generated Animations(CGA),when applied to three-dimensional(3D)city models(3DCM),can be used as powerful tools to support urban decision-making.This leads to a new paradigm,based on procedural modeling,that allows the integration of known urban structures.Methods This paper introduces a new workflow for the development of high-quality approximations of urban models in a short time and enables facilities to be imported from other cities into a given city model,following specific generation rules.Results Thus,this workflow provides a very simple approach to observe,study,and simulate the implementation of models already developed in other cities,in a city where they are not yet adopted.Examples of these models include all types of mobility systems and urban infrastructure.Conclusions This allows us to perceive the environmental impact of certain decisions in the real world,as well as to carry out simple simulations to determine the changes that can occur in the flows of people,traffic,and other city activities.展开更多
In this paper we propose a novel method for building animation model of realhuman body from surface scanned data. The human model is represented by a triangular mesh anddescribed as a layered geometric model. The mode...In this paper we propose a novel method for building animation model of realhuman body from surface scanned data. The human model is represented by a triangular mesh anddescribed as a layered geometric model. The model consists of two layers: the control skeletongenerating body animation from motion capture data, and the simplified surface model providing anefficient representation of the skin surface shape. The skeleton is generated automatically fromsurface scanned data using the feature extraction, and then a point-to-line mapping is used to mapthe surface model onto the underlying skeleton. The resulting model enables real-time and smoothanimation by manipulation of the skeleton while maintaining the surface detail. Compared withearlier approach, the principal advantages of our approach are the automated generation of bodycontrol skeletons from the scanned data for real-time animation, and the automatic mapping andanimation of the captured human surface shape. The human model constructed in this work can be usedfor applications of ergonomic design, garment CAD, real-time simulating humans in virtual realityenvironment and so on.展开更多
Automated manufacturing system is characterized by flexibility. It aims at producing a variety of products with virtually no time loses to change over from one part to the next. In this paper, the Machining Process Si...Automated manufacturing system is characterized by flexibility. It aims at producing a variety of products with virtually no time loses to change over from one part to the next. In this paper, the Machining Process Simulator GMPS is introduced, which can be used as a supported environment for machining process. It can be executed off-line or on-line in manufacturing systems in order to predict the collisions of tool with machined workpieces, fixtures or pallets. First, the functional model of GMPS is described, then adopted critical techniques in the simulator are introduced. Finally, an application of GMPS in CIMS ERC of China is presented.展开更多
大型复杂建筑物的三维建模、虚拟演示已成为当前计算机三维制作技术在建筑业的主要应用之一。本文利用3DSMAX、Adobe After Effects等技术对某城市中心广场的场景进行三维建模、动画处理、灯光和视点设计、后期影视合成特效处理等等,并...大型复杂建筑物的三维建模、虚拟演示已成为当前计算机三维制作技术在建筑业的主要应用之一。本文利用3DSMAX、Adobe After Effects等技术对某城市中心广场的场景进行三维建模、动画处理、灯光和视点设计、后期影视合成特效处理等等,并对场景模型、灯光等进行了优化,实现了该城市中心广场三维演示系统,具有虚拟现实的效果。展开更多
基金supported by the Education and Teaching Reform and Research Project of University of Science and Technology Beijing(JG2018M15)
文摘With the rapid development of internet technology,some innovative fashion product are increasingly showed in the way of three-dimensional virtual display.Taking fashion jewelry as an example,the virtual 3D display method of product is studied by Inventor which is parametric 3D design software for efficient modeling and animation developed by the Autodesk Company.By discussing the methods of part feature creation and assembly design,the real simulation of the product is carried out.Three-dimensional animation techniques,such as fade animation,components animation and camera animation are used to depict product features and animation effects.
基金project"Crowdsourcing Optimized Wireless Sensor Network Deployment(CRoWD)"of Dirección General de Investigaciones of Universidad Santiago de Cali under grant No.613-621119-852.
文摘Background Computer Generated Animations(CGA),when applied to three-dimensional(3D)city models(3DCM),can be used as powerful tools to support urban decision-making.This leads to a new paradigm,based on procedural modeling,that allows the integration of known urban structures.Methods This paper introduces a new workflow for the development of high-quality approximations of urban models in a short time and enables facilities to be imported from other cities into a given city model,following specific generation rules.Results Thus,this workflow provides a very simple approach to observe,study,and simulate the implementation of models already developed in other cities,in a city where they are not yet adopted.Examples of these models include all types of mobility systems and urban infrastructure.Conclusions This allows us to perceive the environmental impact of certain decisions in the real world,as well as to carry out simple simulations to determine the changes that can occur in the flows of people,traffic,and other city activities.
文摘In this paper we propose a novel method for building animation model of realhuman body from surface scanned data. The human model is represented by a triangular mesh anddescribed as a layered geometric model. The model consists of two layers: the control skeletongenerating body animation from motion capture data, and the simplified surface model providing anefficient representation of the skin surface shape. The skeleton is generated automatically fromsurface scanned data using the feature extraction, and then a point-to-line mapping is used to mapthe surface model onto the underlying skeleton. The resulting model enables real-time and smoothanimation by manipulation of the skeleton while maintaining the surface detail. Compared withearlier approach, the principal advantages of our approach are the automated generation of bodycontrol skeletons from the scanned data for real-time animation, and the automatic mapping andanimation of the captured human surface shape. The human model constructed in this work can be usedfor applications of ergonomic design, garment CAD, real-time simulating humans in virtual realityenvironment and so on.
文摘Automated manufacturing system is characterized by flexibility. It aims at producing a variety of products with virtually no time loses to change over from one part to the next. In this paper, the Machining Process Simulator GMPS is introduced, which can be used as a supported environment for machining process. It can be executed off-line or on-line in manufacturing systems in order to predict the collisions of tool with machined workpieces, fixtures or pallets. First, the functional model of GMPS is described, then adopted critical techniques in the simulator are introduced. Finally, an application of GMPS in CIMS ERC of China is presented.
文摘大型复杂建筑物的三维建模、虚拟演示已成为当前计算机三维制作技术在建筑业的主要应用之一。本文利用3DSMAX、Adobe After Effects等技术对某城市中心广场的场景进行三维建模、动画处理、灯光和视点设计、后期影视合成特效处理等等,并对场景模型、灯光等进行了优化,实现了该城市中心广场三维演示系统,具有虚拟现实的效果。
