vriphys: Workshop in Virtual Reality Interactions and Physical Simulations: Recent submissions

Now showing items 101-120 of 161

    • Hardware Accelerated Broad Phase Collision Detection for Realtime Simulations 

      Woulfe, Muiris; Dingliana, John; Manzke, Michael (The Eurographics Association, 2007)
      Broad phase collision detection is a vital task in most interactive simulations, but it remains computationally expensive and is frequently an impediment to efficient implementation of realtime graphics applications. To ...

    • A Fast and Compact Solver for the Shallow Water Equations 

      Lee, Richard; O'Sullivan, Carol (The Eurographics Association, 2007)
      This paper presents a fast and simple method for solving the shallow water equations. The water velocity and height variables are collocated on a uniform grid and a novel, unified scheme is used to advect all quantities ...

    • Refraction of Water Surface Intersecting Objects in Interactive Environments 

      Cords, Hilko (The Eurographics Association, 2007)
      This paper presents a rapid method to render dynamic water surfaces with penetrating obstacles in real-time. Taking the surface boundary into account, our method allows the rendering of single reflections and single ...

    • Real-Time Erosion Using Shallow Water Simulation 

      Benes, Bedrich (The Eurographics Association, 2007)
      We present a new real-time hydraulic erosion simulation for Computer Graphics. In our system water runs over the surface and disintegrates the underlying layer of soil. The grit is simulated as a fluid with higher viscosity ...

    • Occlusion-Based Snow Accumulation Simulation 

      Foldes, David; Benes, Bedrich (The Eurographics Association, 2007)
      We present a fast technique for the simulation of accumulated snow. Our technique is based on two phenomena; local occlusion of small holes and ditches, and the global influence of a skylight. We use ambient occlusion to ...

    • A Physically Based Deformation Model for Interactive Cartoon Animation 

      Garcia, Marcos; Dingliana, John; O'Sullivan, Carol (The Eurographics Association, 2007)
      We present an approach for automatic cartoon-style motion dramatization suitable for interactive realtime animation. The system is built upon a physically based deformation model previously discussed in [GMPR06] and achieves ...

    • Constraint Sets for Topology-changing Finite Element Models 

      Gissler, Marc; Becker, Markus; Teschner, Matthias (The Eurographics Association, 2007)
      We propose constraint sets as an efficient data structure for topology-changing deformable tetrahedral meshes. Using constraint sets, data structure updates in case of topology changes are simple and efficient. The consistency ...

    • Virtual Adhesive: a Way to Handle Sticky Collisions in Surgical and Biological Simulators 

      Carra, Alexandre; Martiel, Jean-Louis; Promayon, Emmanuel (The Eurographics Association, 2007)
      A variety of methods have been proposed to efficiently process collisions between deformable objects. The method presented in this paper allows to model sticky states between deformable objects with triangulated surfaces. ...

    • Medial Surface-Based Real Time Simulation of Elastic Objects 

      Pfaff, Matthias; Wuethrich, Charles Albert (The Eurographics Association, 2007)
      This paper presents a method for the real time simulation of the dynamical behaviour of elastic objects which bases on the medial surface. From a surface based 3D model, the medial surface is generated automatically without ...

    • Stable Interactive Cutting of Deformable Objects 

      Jerábková, L.; Jerábek, J.; Chudoba, R.; Kuhlen, T. (The Eurographics Association, 2006)
      In this paper we present a novel approach for stable interactive cutting of deformable objects in virtual environments. Our method is based on the extended finite elements method, allowing for a modeling of discontinuities ...

    • Stable Collision Response Method in Complex Interactions 

      Hernantes, J.; Diaz, I.; Alvarez, H.; Borro, D. (The Eurographics Association, 2006)
      Haptic technology is quite recent and therefore in many cases it is difficult to simulate real contacts or interactions with a high sensation of realism. Collision response methods that calculate the force-feedback tend ...

    • Virtual reality training system for portal selection in shoulder arthroscopy 

      Fernández-Arroyo, José Manuel Fernández; Beriso, Sofía Bayona; Moya, Carolina Gómez; Carro, Lauren García (The Eurographics Association, 2006)
      In arthroscopy, the first step is to choose the correct position and orientation of the entry points (portals) by palpating the osseous references. We have built a virtual reality training system for placement of the ...

    • A study of the Manipulability of the PHANToM OMNI Haptic Interface 

      Martín, José San; Triviño, Gracián (The Eurographics Association, 2006)
      When a haptic interface is going to be used as a part of a computational system a design criteria consist of maximizing the coincidence between the application 3D space and the physical volume where the haptic device ...

    • Explicit Integrators Analysis for a Simulation Engine 

      García, Marcos; Espadero, José Miguel; Rodríguez, Angel (The Eurographics Association, 2006)
      One of the most significant elements when dealing with particle based object modeling in virtual reality applications is the integrator used to compute the state of the particles, because it grants the deformation stability ...

    • Simulating Prostate Surgical Procedures with a Discrete Soft Tissue Model 

      Marchal, Maud; Promayon, Emmanuel; Troccaz, Jocelyne (The Eurographics Association, 2006)
      Simulating surgical procedures is still a complex challenge. Either modeling methods or simulators have to take into account specific geometries and properties of the patient organs. In this paper, a new soft tissue modeling ...

    • The use of Tetrahedra to Detect Collisions 

      Madera, F. A.; Day, A. M.; Laycock, S. D. (The Eurographics Association, 2006)
      We present an algorithm for collision detection by filling the free space between the objects involved. We compute the closest regions of a pair of objects, and update them during the running simulation. The algorithm is ...

    • Position Based Dynamics 

      Müller, Matthias; Heidelberger, Bruno; Hennix, Marcus; Ratcliff, John (The Eurographics Association, 2006)
      The most popular approaches for the simulation of dynamic systems in computer graphics are force based. Internal and external forces are accumulated from which accelerations are computed based on Newton's second law of ...

    • Virtual Resectoscope Interface for a Surgery Simulation Training System of the Prostate 

      Padilla, Miguel A.; Monte, Felipe Altamirano del; Cosio, Fernando Arambula (The Eurographics Association, 2006)
      In this work is presented the current state of the development of a virtual resectocope interface for a surgery simulation system for training Transurethral Resection of the Prostate (TURP). The interface consists of two ...

    • Fast Dynamic Simulation of Multi-Body Systems Using Impulses 

      Bender, Jan; Schmitt, Alfred A. (The Eurographics Association, 2006)
      A dynamic simulation method for multi-body systems is presented in this paper. The special feature of this method is that it satisfies all given constraints by computing impulses. In each simulation step the joint states ...

    • Real Time Simulation of Phaco-emulsification for Cataract Surgery Training 

      Agus, Marco; Gobbetti, Enrico; Pintore, Giovanni; Zanetti, Gianluigi; Zorcolo, Antonio (The Eurographics Association, 2006)
      We present a real-time simulation of the phaco-emulsification task in a virtual reality training system for cataract surgery. Phaco-emulsification consists in breaking in small fragments and completely removing the eye ...