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6th International conference on computer graphics, imaging and Visualization (CGIV 2009)

作者： Kartiko, Iwan Kavakli, Manolya Cheng, Ken Macquarie Univ Dept Comp VISOR Res Grp Sydney NSW 2109 Australia Macquarie Univ Dept Brain Behav & Evolut Sydney NSW Australia

ISBN: (纸本)9780769537894

This article discusses the effects of Animated Virtual Actors' (AVAs) visual complexity on Simulator Sickness (SS) in Virtual Reality (VR) applications. SS is one of the major disadvantages of VR simulations. Previous research has shown that visual complexity correlates with SS. Yet complex AVAs are increasingly used along with real-time graphics. Minimising SS for a VR application is thus beneficial. A series of VR simulations were created to teach second-year psychology students about the navigational capabilities of desert ants with different levels of AVA's visual complexity: flat, cartoon, or lifelike. We predicted that more complex AVAs would induce more SS. The results contradicted the predictions, with no significant differences in SS between groups as a function of the AVAs visual complexity. Moreover, our methods succeeded in low overall levels of SS in all the simulations. Possible explanations and our future research directions are discussed.

关键词： virtual actors virtual reality visual complexity simulation sickness visualisation

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Paramidal multi-view PBR: A point-based algorithm for multi-view multi-resolution rendering of large data sets from range images

Paramidal multi-view PBR: A point-based algorithm for multi-...

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4th International conference on computer graphics Theory and Applications, GRAPP 2009

作者： Farooq, Sajid Siebert, J.Paul Computer Vision and Graphics Lab Dept of Computer Science University of Glasgow Glasgow United Kingdom

ISBN: (纸本)9789898111678

This paper describes a new Point-Based-Rendering technique that is parsimonious with the rypically large data-sets captured by stereo-based, multi-view,3D imaging devices for clinical *** approach is based on image pyramids and exploits the implicit topology relations found in range images, but not in unstructured 3D point-could representations. An overvievv of our proposed PBR-based system for visualisation, manipulation, integration and analysis of sets of range images at native resolution is presented along with initial multi-view rendering results.

关键词： Stereo image processing

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Large Scale Network Analysis with Interactive visualisation

Large Scale Network Analysis with Interactive Visualisation

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International conference on computer graphics, imaging and Visualization, CGIV

作者： Quang Vinh Nguyen Mao Lin Huang School of Computing & Mathematics University of Western Ontario Australia Faculty of Engineering & Information Technology University of Technology Sydney Australia

This paper proposes a new interactive visualization for analyzing large hierarchical structures and networks. The technique combines of different graph layout methods with a layout refinement process, an interactive navigation mechanism and clustering algorithms. The integration of these components makes it flexible in dealing with a variety of graph and hierarchical structures. Interactive exploration is enabled with chain-context view. We aim to provide user with an effective mechanism for understanding of the nature of various networks. This could lead to the discovering and revealing of the hidden structures and relationships among elements as well as relationships associated with the elements.

关键词： Large-scale systems Information analysis Visual analytics Social network services Image analysis Biological system modeling Terrorism Data visualization computer graphics computer networks

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3D Visualization of Medical Image Data Employing 2D Histograms

3D Visualization of Medical Image Data Employing 2D Histogra...

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International conference on visualisation, VIS

作者： Stefan Wesarg Matthias Kirschner Interactive Graphics Systems Group (GRIS) Technische Universität Darmstadt Germany

Transfer functions (TF) are a means for improving the visualization of 3D medical image data. If in addition to intensity another property is employed, two-dimensional TFs can be specified. For this, 2D histograms are helpful. In this work we investigate how the property feature size can be used for the definition of 2D TFs and the visualization of medical image data. Furthermore, we compare this method to approaches that employ gradient magnitude as second property. From our experiments with several medical image data we conclude, that structure size enhanced 2D histograms are more intuitive. This is especially true in the clinical area, where physicians are much more familiar with the meaning of the size of anatomical structures than with the concept of gradient magnitude.

关键词： Data visualization Biomedical imaging Histograms Transfer functions Anatomical structure Isosurfaces graphics Rendering (computer graphics) Employment Area measurement

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Proceedings - computer graphics, imaging and visualisation, Modern Techniques and Applications, CGIV: Preface

Proceedings - Computer Graphics, Imaging and Visualisation, ...

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Proceedings - computer graphics, imaging and visualisation, Modern Techniques and Applications, CGIV 2008年 x页

作者： Sarfrz, Muhammad Banissi, Ebad Jeng, Wong Chow

No abstract available

ISBN: (纸本)0769533590

No abstract available

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Parallel visualisation Approach of a 3D Heart Model

Parallel Visualisation Approach of a 3D Heart Model

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

作者： Kanthasamy, Kalpana Rathinam, Alwin Kumar Univ Malaya Fac Comp Sci & Informat Technol Kuala Lumpur Malaysia Univ Malaya Virtual Real Ctr Kuala Lumpur Malaysia

ISBN: (纸本)9780769533599

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 tip the rendering performance. This research will assist in low cost building of visualising biological modelling applications in the future.

关键词： Immersed Boundary Method (IBM) Computational Fluid Dynamics (CFD) visualisation visualization Virtual Heart Model point cloud cluster computing VTK

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

作者： Yasuda, Ren Harada, Takahiro Kawaguchi, Yoichiro Univ Tokyo Tokyo 1138654 Japan

ISBN: (纸本)9780769533599

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： graphics processing unit

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Evolution of computer graphics and its Impact on Engineering Product Development

Evolution of Computer Graphics and its Impact on Engineering...

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

作者： Sathyanarayana, K. Kumar, Ravi G. V. V. Infosys Technol Ltd Prod Life Cycle & Engn Solut Bangalore Karnataka India

ISBN: (纸本)9780769533599

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： computer graphics Product Design evolution Evolution Future technologies Engineering automotive engineering evolution evolution advance

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Understanding the Technicalities of Photorealistic 3D Environments to Support Cinematography and Composition for Film & Animation

Understanding the Technicalities of Photorealistic 3D Enviro...

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

作者： Joon, Jong Sze Hui, Soon Eu Chan, Yuen May Multimedia Univ Fac Creat Multimedia Cyberjaya 63100 Selangor Malaysia LimkokWing Univ Coll Creat Tehcnol Cyberjaya 63100 Selangor Malaysia

ISBN: (纸本)9780769533599

This paper reviews the integration of computer graphics principles in simulating photorealistic 3D environments integrating life action footage for film. To achieve adequate believability and create impact, the look of the 3D background requires digital enhancement to achieve a certain stage of realism. This will depend primarily on the material/shader and renderer utilised in the 3D application. Despite having the realistic look, the other aspect to consider for a perfect merge between 3D and life requires one to skillfully match perspective and lighting. Another aspect to consider is the cinematography and composition of the scene.

关键词： Three dimensional computer graphics

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A Real Time Simulation of Flood Hazard

A Real Time Simulation of Flood Hazard

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

作者： Ghazali, Jasrul Nizam Kamsin, Amirrudin Univ Malaya Fac Comp Sci & Informat Technol Kuala Lumpur 50603 Malaysia

ISBN: (纸本)9780769533599

Kuala Lumpur city is located at the confluence of two rivers and are flood prone area. With rapid development and uncontrolled town planning, the city had experience several major flash flood incidents and have caused tremendous damage to country. This research describes a study made to model and simulate the flash flood incident that struck Kuala Lumpur on 10 June 2007 using 3D computer Graphic and fluid simulation techniques. The aim is to examine the stability and effectiveness of this approach as a solution tool for environmental hazard studies. Particle-Based method used to model the fluid objects using MAYA software. Light Detection and Ranging (LIDAR) data and remote sensing imagery were used to model the study area. The main contribution of this study is the introduction of this approach to enhance realistic visualization for environmental studies thus enable better planning and countermeasures created to prevent the disaster.

关键词： Three Dimensional (3D) computer graphics Fluid Simulation Particle-Based Geographical Information System (GIS) Light Detection and Ranging (LIDAR) Digital Elevation Model (DEM)

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