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Skeleton Based 3D Model Morphing Using Barycentric Map

Skeleton Based 3D Model Morphing Using <i>Barycentric</i> Ma...

引用

5th International conference on computer graphics, imaging and Visualization (CGIV)

作者： Kaneko, Kosuke Okada, Yoshihiro Kyushu Univ Grad Sch Informat Sci & Elect Engn Nishi Ku Fukuoka 8190395 Japan

ISBN: (纸本)9780769533599

This paper proposes a skeleton based 3D model morphing system using Barycentric map. Although there have been many 3D model morphing systems, even it is still laborious to perform the 3D model morphing because it needs many manual operations. The most important task for the morphing is the vertex correspondence between two base models. When the vertex numbers and geometric topologies of two models are different, its 3D model morphing is difficult. For overcoming this problem, the proposed system automatically determines the vertex correspondence based on skeletons of two models. The overview of proposed processes is as follows: first of all, the user segments each of two models manually. Then the system generates bones of the each model based on the above segmentation. Next, the system defines the hierarchy of generated bones to generate the skeleton of the each model and then determines the correspondence between two bones of the two models based on the hierarchical structure's of their skeletons. Finally, the system defines vertex correspondences between the No models using Barycentric mapping, Then the 3D model morphing between the two models will become possible. These processes except the first segmentation step are automatic.

关键词： Polygonal model Morphing Segmentation Skeleton computer graphics

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Virtual City Maker and Virtual navigator: A modelling and visualisation solution for mobile 3D Virtual cities

Virtual City Maker and Virtual navigator: A modelling and vi...

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10th IASTED International conference on computer graphics and imaging, CGIM 2008

作者： Gatzidis, Christos Liarokapis, Fotis Brujic-Okretic, Vesna Baker, Stuart giCentre Department of Information Science City University London EC1V 0HB United Kingdom Faculty of Engineering and Computing Department of Creative Computing Coventry CV1 5FB United Kingdom Alcatel-Lucent Telecom Limited Christchurch Way Greenwich London SE10 OAG United Kingdom

ISBN: (纸本)9780889867192

This paper presents a complete procedural 3D modelling solution for mobile devices, called Virtual City Maker, based on scripting algorithms allowing for both the automatic and also semi-automatic creation of photorealistic quality virtual urban content. The input data used include the combination of aerial images, GIS data, 2D ground maps and terrestrial photographs grouped with a user-friendly customized interface which permits for the automatic and interactive generation of large-scale, accurate, georeferenced and fullytextured 3D virtual city content. This content can be specially optimized for use with mobile devices but also with navigational tasks in mind. Moreover, a user-centred mobile virtual reality (VR) visualisation and interaction tool operating on PDAs (Personal Digital Assistants) for pedestrian navigation is also discussed. This engine supports the import and display of various navigational file formats (2D and 3D) and also includes a comprehensive front-end user-friendly graphical user interface providing immersive virtual 3D navigation to a wide range of users.

关键词： Navigation

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Visualization of 3D spatial data sets applied in radar imaging

Visualization of 3D spatial data sets applied in radar imagi...

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International conference on Microwave and Millimeter Wave Technology

作者： Gao Ying Fei Yi Zheng Tao Peng Yu-xin NW Polytech Univ Coll Marine Xian 710072 Peoples R China

ISBN: (纸本)9781424418794

Radar imaging technology is a vigorous research field at present. The method of SAR imaging is often used in radar imaging. But it is a quite complex process. In this paper, visualization of 3D spatial data sets technology is applied in radar imaging. The principle of creating iso-surfaces in 3D regular data sets and the optimization to MC algorithm are introduced. The way of building programming circumstance for OpenGL to render iso-surfaces is presented in detail. Real data get from radar scanning is used to implement 3D re-building. The result is quite satisfactory because the configuration of spatial object and the reflective intensity to electromagnetic wave are reflected well.

关键词： data visualisation optimisation radar computing radar imaging rendering (computer graphics) 3D rebuilding 3D spatial data sets visualization OpenGL electromagnetic wave iso-surfaces rendering marching cube algorithm optimization radar scann

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Bezier Triangular Neural Network

Bezier Triangular Neural Network

引用

International conference on computer graphics, imaging and Visualization, CGIV

作者： Tang van To Kotchakorn Sa-Ingthong Department of Computer Science Faculty of Science and Technology Assumption University Bangkok Thailand

Bezier triangular neural network (BTNN) is a multilayer back propagation neural network which used for surface approximation. The approximation is solved by learning process of BTNN from observation data points.

ISBN: (纸本)9780769533599;0769533590

关键词： Artificial neural networks Approximation methods Mean square error methods Spline Training Polynomials Shape

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Evolution of computer graphics and Its impact on Engineering Product Development

Evolution of Computer Graphics and Its impact on Engineering...

引用

International conference on computer graphics, imaging and Visualization, CGIV

作者： K. Sathyanarayana G.V.V. Ravi Kumar Product Life Cycle and Engineering Solutions Infosys Technologies Limited Bangalore India

computer graphics matured over many years and played an important role in the development of engineering products like automotive and aircraft components. The current CAx (CAD/CAM/CAE) tools use computer graphics extensively, while helping in conceiving better designs with improved quality. Nowadays, engineering product development is being done concurrently and collaboratively, due to the advances in computer graphics. This paper presents a brief overview on evolution of computer graphics over the years. It also attempts to present, how advances in computer graphics, have revolutionized the current engineering product development and what future technologies will offer.

关键词： graphics computer graphics Data visualization Solid modeling Three dimensional displays Design automation Product development

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Parallel and Distributed Visualization: The State of the Art

Parallel and Distributed Visualization: The State of the Art

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International conference on computer graphics, imaging and Visualization, CGIV

作者： Ali Meligy Faculty of Information Technology Middle East University of Graduate Studies Amman Jordan

ISBN: (纸本)9780769533599

Visualization is one of the most important applications of computer graphics. To have a parallel infrastructure for visualization, some technologies would be needed. We identify the state-of-the-art technologies that have prepared for building such an infrastructure and examine a collection of applications that would benefit from it. We consider a broad range of scientific and technological advances in visualization, which are relevant to visual supercomputing. Mainly, we present the original abstracts from the cited papers.

关键词： Data visualization Visualization Mobile communication Computational modeling graphics Program processors computer graphics

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Real-Time Simulation of Granular Materials Using graphics Hardware

Real-Time Simulation of Granular Materials Using Graphics Ha...

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International conference on computer graphics, imaging and Visualization, CGIV

作者： Ren Yasuda Takahiro Harada Yoichiro Kawaguchi University of Tokyo Japan University of Tokyo

ISBN: (纸本)9780769533599;0769533590

We present a method to compute friction in a particle-based simulation of granular materials on GPUs and its data structure. We use Distinct Element Method to compute the force between particles. There has been a method to accelerate Distinct Element Method using GPUs, but the method does not compute friction. We implemented friction into the DEM simulation on GPUs and this leads to the real-time simulation of granular materials.

关键词： Computational modeling Force Friction Fluids Distance measurement Acceleration graphics

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Efficient Algorithms for Non-Rational and Rational Bézier Curves

Efficient Algorithms for Non-Rational and Rational Bézier C...

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International conference on computer graphics, imaging and Visualization, CGIV

作者： Natasha Dejdumrong Computer Engineering Department King Mongkut''s University of Technology Bangkok Thailand

ISBN: (纸本)9780769533599;0769533590

In this paper, a new basis with linear computational complexity has been introduced and used to form non-rational and rational curves. Two algorithms for computing points on non-rational and rational proposed curves are expressed with their linear complexity. Moreover, the relationships between these proposed curves and the Bezier curves, for both non-rational and rational forms, are given by using polar form and homogeneous coordinate approaches. Consequently, two efficient algorithms with linear complexity have been introduced to be used in drawing non-rational and rational Bezier curves.

关键词： Complexity theory Algorithm design and analysis Computational modeling Visualization imaging computer graphics conferences

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Fair Path Planning with a Single Cubic Spiral Segment

Fair Path Planning with a Single Cubic Spiral Segment

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International conference on computer graphics, imaging and Visualization, CGIV

作者： Zulfiqar Habib Manabu Sakai Department of Computer Science National University of Computer and Emerging Sciences Lahore Pakistan Department of Mathematics & Computer Science Kagoshima University Kagoshima Japan

ISBN: (纸本)9780769533599;0769533590

Spirals are curves of monotone curvature with constant sign and therefore such curves are free from singularities (loops, cusps), inflection points, and local curvature extrema. These properties make the study of spiral segments an interesting problem both in practical and aesthetic applications. An important issue in this paper is to design spiral transitions preserving G 2 Hermite conditions. This paper aims to improve the existing methods of a C-shaped transition between two circles with a single cubic spiral segment.

关键词： computers Mathematics Robots Interpolation Path planning Road transportation imaging

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Parallel visualisation Approach of a 3D Heart Model

Parallel Visualisation Approach of a 3D Heart Model

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International conference on computer graphics, imaging and Visualization, CGIV

作者： Kalpana Kanthasamy Alwin Kumar Rathinam Virtual Reality Centre University of Malaya Kuala Lumpur Malaysia Faculty of Computer Science and Information Technology Kuala Lumpur Malaysia

ISBN: (纸本)9780769533599;0769533590

This research done introduces a parallel approach in visualising a three dimensional (3D) virtual heart model simulation dataset. The paper outlines briefly the immersed boundary method (IBM) and how they differ from regular CFD. The dissimilarities motivate the need to show graphical representation of the IBM. The Immersed Boundary Method was then used to compute the 3D heart model simulation. The resulting simulation data was then visualised utilising a parallel adaptation of the visualisation tool kit (VTK), an open source library. The visualisation was conducted in a cluster computing environment. The computers used in the cluster were off-the-shelf commodity personal computers. The number of processors involved in the parallelism would help to speed up the rendering performance. This research will assist in low cost building of visualising biological modelling applications in the future.

关键词： Data visualization Heart Solid modeling Computational modeling Biological system modeling Mathematical model Meteorology

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