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13th International Fall Workshop Vision, Modeling, and visualization 2008, VMV 2008

作者： Fuchs, Raphael Peikert, Ronald Sadlo, Filip Alsallakh, Bilal Gröller, Meister Eduard Institute of Computer Graphics and Algorithms TU Vienna Austria VRVis Research Center for Virtual Reality and Visualization Vienna Austria Computer Graphics Laboratory ETH Zurich Switzerland

ISBN: (纸本)9781586039219

In this paper we discuss generalizations of instantaneous, local vortex criteria. We incorporate information on spatial context and temporal development into the detection process. The presented method is generic in so far that it can extend any given Eulerian criterion to take the Lagrangian approach into account. Furthermore, we present a visual aid to understand and steer the feature extraction process. We show that the delocalized detectors are able to distinguish between connected vortices and help understanding regions of multiple interacting vortex structures. The delocalized detectors extract smoother structures and reduce noise in the vortex detection result.

关键词： Vortex flow

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Development and implementation of rear projection algorithm based on high-end graphics accelerator

Development and implementation of rear projection algorithm ...

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16th International Conference on computer graphics and Vision, GraphiCon 2006

作者： Kovalkov, Max Rukhlinsky, Alexey V. Tarancev, Igor G. Department of Physics Novosibirsk State University Russia Laboratory of Synthesizing Visualization Systems IAE Russia Laboratory Computer Graphics IAE Russia

The algorithm of rear projection of noisy image is considered. Different types of filtration for suppression of noise are observed. Quantitative assessment of speed of the software implementation of the proposed algor... 详细信息

关键词： Image filtration Rear projection

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A novel parallel algorithm for computing the mooring line based on lumped-mass method

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International Journal of Modeling, Simulation, and Scientific Computing 2017年第1期8卷 52-66页

作者： Zhong-Xian Zhu Yong Yin Muhammad Mobeen Movania Laboratory of Marine Simulation and ControlDalian Maritime University Linghai Road No.1 Dalian116026P.R.China Computer Graphics and Visualization Research Group DHA Suffa University 75500 KarachiPakistan

Dynamic modeling and simulation of the mooring system are the key technologies in anchor handling simulator(AHS).Built up the mooring line’s dynamics model based on lumped-mass method(LMM),and fourth-order Runge–Kutta method was used to solve the model;because of the huge amounts of calculation in the model’s solving,the very time-consuming process brings great impact on the real-time,fidelity and immersed feeling in the anchor handling scene simulation,seriously hindered its application in AHS.A novel parallel algorithm was proposed to speed-up the model’s solving process by taking the advantages of graphic processing units(GPU’s)massive parallel computing and float point computing *** model’s solving process was implemented on vertex shader based on the transform feedback(TF)mechanism in modern *** results show that,the new algorithm reduced the calculating time largely without losing accuracy,and can finally realize the real-time solving and simulation.

关键词： Anchor handling simulator mooring system lumped-mass method dynamics model parallel computing transform feedback mechanism

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The experience of developing real-time rendering systems for the simulation and training 23

The experience of developing real-time rendering systems for...

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23rd International Conference on computer graphics and Vision, GraphiCon 2013

作者： Dolgovesov, Boris S. Morozov, Boris B. Synthesizing Visualization Systems Laboratory Institute of Automation and Electrometry SB RAS Russia Software Systems for Computer Graphics Laboratory Institute of Automation and Electrometry SB RAS Russia

ISBN: (纸本)9785804414024

This paper is about implementation of the presentations system based on integrated virtual reality technology. This system provides the combining of a virtual environment and a lecturer who can interact with object's models of a virtual environment real-time. Furthermore the system can combine different multimedia data (3D objects' models, video, Microsoft PowerPoint presentations, histograms, tomography data, etc.). This option expands the potential of interactive presentation process. © 23rd International Conference on computer graphics and Vision, GraphiCon 2013 - Conference Proceedings. All rights reserved.

关键词： Virtual reality

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Virtual cutting of anatomical structures

Virtual cutting of anatomical structures

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7th Conference on Medicine Meets Virtual Reality, MMVR 1999

作者： Voß, Gerrit Hahn, James K. Müller, Wolfgang Lindeman, Rob Fraunhofer Institute for Computer Graphics Dep. Visualization and Virtual Reality Rundeturmstr. 6 64283 Darmstadt Germany Laboratory for Advanced Computer Applications in Medicine Institute for Computer Graphics George Washington University Washington DC 20052 United States

ISBN: (纸本)9051994451

In the context of medicine cutting is one of the most important operations. Many surgical tasks start with an incision, allowing the surgeon to access the region of interest, using either conventional or minimal invasive surgery techniques. The work presented herein should be seen in the context of surgical training and preoperative planning using computer assisted medical simulation systems. The main result of this work is the proposed cutting algorithm based on predefined templates. To integrate this approach in the existing surgical training simulator and to handle additional tasks like soft tissue deformation, needed by the medical environment, a generic simulation framework was developed. This framework is able to utilize given multiprocessor- and network-environments to achieve the desired realtime interactivity.

关键词： Image segmentation

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Evaluation of areal touch feedback for palpation simulation

Evaluation of areal touch feedback for palpation simulation

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VIS 05: IEEE visualization 2005, Proceedings

作者： Park, Jinah Kim, Sang Youn Kyung, Ki Uk Kwon, Dong Soo Computer Graphics and Visualization Laboratory Information and Communications University Korea Republic of Telerobotics and Control Laboratory Korea Advanced Institute of Science and Technology Korea Republic of Samsung Advanced Institute of Technology Korea Republic of

No abstract available

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Spherical layout – Layout for 3d tree visualization

Spherical layout – Layout for 3d tree visualization

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2007 IADIS International Conference on Interfaces and Human computer Interaction, IHCI 2007, part of the 1st IADIS Multi Conference on computer Science and Information Systems, MCCSIS 2007

作者： Larrea, Martín L. Martig, Sergio R. Castro, Silvia M. Visualization and Computer Graphics Research and Development Laboratory Departamento de Ciencias e Ingenería de la Computación Universidad Nacional del Sur Avenida Alem 1253 Argentina

ISBN: (纸本)9789728924393

The 3D tree visualization faces multiples challenges: the election of an appropriate layout, the use of the interactions that make it easier the data exploration and a metaphor that helps the information understanding. A good combination of these three elements (layout, interactions and metaphor) will result in a visualization that effectively convey the key features of a complex structure or system to a wide range of users and permits the analytical reasoning process. The goal of this work was centered in the 3D tree visualization. In spite of their apparent simplicity, the displaying of a tree in 3D can also introduce new problems that can be overcome with the appropriate interactions. So, we have developed a new visualization technique for 3D tree visualization;this includes the design of a new tree layout that we called Spherical layout and the set of interactions that can be applied on this representation. This technique allows representing hierarchical structures to different levels of detail and also can be used as a visualization technique that allows a tree with attribute to be visualized. The Spherical layout has shown good result for large trees without compromising the performance;this is a key issue in tree visualization. © 2007 IADIS

关键词： visualization

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Development of distributed multimedia virtual environment with multichannel visualization of multimedia data by graphic accelerators 23

Development of distributed multimedia virtual environment wi...

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23rd International Conference on computer graphics and Vision, GraphiCon 2013

作者： Morozov, Boris B. Dolgovesov, Boris S. Mazurok, Boris S. Gorodilov, Mikhail A. Software Systems for Computer Graphics Laboratory Institute of Automation and Electrometry SB RAS Russia Synthesizing Visualization Systems Laboratory Institute of Automation and Electrometry SB RAS Russia Institute of Automation and Electrometry SB RAS Russia

ISBN: (纸本)9785804414024

An approach to the development of technical solutions for the creating of a real-time Distributed Multimedia Virtual Environment is described. The main objective of the environment - control the formation and delivery of multimedia content from multiple sources to multiple recipients. © 23rd International Conference on computer graphics and Vision, GraphiCon 2013 - Conference Proceedings. All rights reserved.

关键词： Virtual reality

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1 Course description

1 Course description

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ACM SIGGRAPH 2007 - International Conference on computer graphics and Interactive Techniques

作者： Kasik, Dave Gobbetti, Enrico Marton, Fabio Manocha, Dinesh Yoon, Sung-Eui Correa, Wagner Bruderlin, Beat Stephens, Abe Slusallek, Philipp Dietrich, Andreas Quilez, Iñigo Boeing Enterprise Visualization China Italy Department of Computer Science University of North Carolina Chapel Hill United States Lawrence Livermore National Laboratory United States Visualization Systems Group United States United States Department of Computer Science Technical University of Ilmenau Germany University of Utah's SCI Institute United States Department of Computer Graphics and Digital Media Saarland University Germany Computer Graphics Group Saarland University Germany

No abstract available

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Automated 3D heart segmentation by search rays for building individual conductor models

Automated 3D heart segmentation by search rays for building ...

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Medical Imaging 2009: visualization, Image-Guided Procedures, and Modeling

作者： Kim, Jaeil Kim, Seokyeol Kim, Kiwoong Park, Jinah Computer Graphics and Visualization Laboratory Information and Communications University 119 Munji-ro Yusung-gu Daejeon Korea Republic of Center for Brain and Cognitive Science Research Korea Research Institute of Standards and Science 209 Gajung-ro Yusung-gu Daejeon Korea Republic of

ISBN: (纸本)9780819475121

Magnetocardiograph (MCG) is one of the most useful diagnosing tools for myocardial ischemic diseases and the conduction abnormality, since the technique directly measures magnetic fields generated by myocardial currents without distortion in a non-invasive way. To localize the current source accurately, building a patient-specific conductor model is indispensable. In this paper, we present the method to automatically construct a patient-specific three-dimensional (3D) mesh model of a human thorax and a heart consisting of pericardium and four chambers. We represent the standard thorax model by simplex meshes, and deform them to fit into the individual CT data to reconstruct accurate surface representations for the MCG conductor model. The deformable simplex mesh model deforms based on the external forces exerted by the edge and gradient components of the source volume data while its internal force acts to maintain the integrity of the shape. However, image driven deformation is often very sensitive to its initial position. Therefore, we suggest our solution to automatic region-of-interest (ROI) detection using search rays, which are casted to 3D volume images to identify the region of a heart based on both the radiodensity values and their continuity along the path of the rays. Upon automatic ROI detection with search rays, the initial position and orientation of the standard mesh model is determined, and each vertex of the model is respectively moved by the weighted sum of the internal and eternal forces to conform to the each patient's own thorax and heart shape while minimizing the user's input. © 2009 SPIE.

关键词： Heart

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