VG01: Volume Graphics Workshop 2001: Recent submissions

Now showing items 1-20 of 27

    • A Framework to Visualize and Interact with Multimodal Medical Images 

      Manssour, Isabel; Furuie, Sergio; Nedel, Luciana; Freitas, Carla (The Eurographics Association, 2001)
      The simultaneous use of images obtained from different sources is common in medical diagnosis. However, even though the quality of these images has been improving, the integration of multimodality data into a unique 3D ...

    • Real-Time Volume Rendering for Virtual ColonoscopyS 

      Li, Wei; Kaufman, Arie; Kreeger, Kevin (The Eurographics Association, 2001)
      We present a volume rendering system that is capable of generating high-quality images of large volumetric data (e.g., 512<sup>3</sup>) in real time (30 frames or more per second). The system is particularly ...

    • Translucent and Opaque Direct Volume Rendering for Virtual Endoscopy Applications 

      Meißner, Michael; Bartz, Dirk (The Eurographics Association, 2001)
      Virtual endoscopy applications frequently require the visual representation of several material interfaces to show the relevant data feature to the user. This requires the specification of complex transfer function which ...

    • EXOMIO: A 3D Simulator for External Beam Radiotherapy 

      Karangelis, Grigorios; Zamboglou, Nikolaos; Baltas, Dimos; Sakas, Georgios (The Eurographics Association, 2001)
      Simulators are medical devices used in the oncology clinics to perform the simulation procedure for the external beam radiotherapy treatment. Unlikely for a clinic to obtain a real Simulator is a high investment in terms ...

    • Hierarchical Perspective Volume Rendering Using Triangle Fans 

      Schussman, Greg; Max, Nelson (The Eurographics Association, 2001)
      We present a method of accelerated perspective volume rendering using cell projection, triangle fans, and a data hierarchy. The hierarchy allows mixed resolution rendering, greatly increasing speed. We utilize triangle ...

    • Volume Visualization of Payoff Regions for Derivatives Risk Management 

      Fei, Tan Toh; Prakash, Edmond Cyril (The Eurographics Association, 2001)
      Volume visualization of derivatives helps us discover risks, which hitherto have been elusive with traditional surface plots. In this paper, we would like to address the volatility visualization issue, which is one of the ...

    • Two-Pass Image and Volume Rotation 

      Chen, Baoquan; Kaufman, Arie (The Eurographics Association, 2001)
      We present a novel two-pass approach for both 2D image and 3D volume rotation. Each pass is a pseudo shear. However, it has a similar regularity as a pure shear in that a beam remains rigid while being sheared. Furthermore, ...

    • Accelerating Voxel-Based Terrain Rendering with Keyframe-Free Image-Based Rendering 

      Qin, Jiafa; MingWan,; Qu, Huamin; Kaufman, Arie (The Eurographics Association, 2001)
      We propose a voxel-based terrain rendering method which incorporates a novel keyframe-free image-based rendering algorithm and a new heuristic ray coherence raycasting algorithm. The current image is generated by warping ...

    • Correction of Voxelization Artifacts by Revoxelization 

      Sramek, Milos; Dimitrov, Leonid I.; Bærentzen, J. Andreas (The Eurographics Association, 2001)
      Earlier proposed antialiasing techniques for voxelization of geometric objects in some cases do not result in completely alias-free data and image renditions. This is often the case for some implicit solids and CSG trees. ...

    • Image-Based Rendering of Surfaces from Volume Data 

      Chen, Baoquan; Kaufman, Arie; Tang, Qingyu (The Eurographics Association, 2001)
      We present an image-based rendering technique to accelerate rendering of surfaces from volume data. We cache the fully volume rendered image (called keyview) and use it to generate novel views without ray-casting every ...

    • Segmentation of Biological Volume Datasets Using a Level-Set Framework 

      Whitaker, Ross; Breen, David; Museth, Ken; Soni, Neha (The Eurographics Association, 2001)
      This paper presents a framework for extracting surface models from a broad variety of volume datasets. These datasets are produced from standard 3D imaging devices, and are all noisy samplings of complex biological structures ...

    • Extracting Boundary Surface of Arbitrary Topology from Volumetric Datasets 

      Duan, Ye; Qin, Hong (The Eurographics Association, 2001)
      This paper presents a novel, powerful reconstruction algorithm that can recover correct shape geometry as well as its unknown topology from arbitrarily complicated volumetric datasets. The algorithm starts from a simple ...

    • Visualization of Labeled Segments Cross-Contour Surfaces 

      Tost, Dani; Puig, Anna (The Eurographics Association, 2001)
      Cross contour surfaces are composed of sets of planar contours. They are the natural output of surface extraction algorithms based on contouring features in parallel image slices of volume models. They are also suitable ...

    • Topology-Guided Downsampling 

      Kraus, Martin; Ertl, Thomas (The Eurographics Association, 2001)
      We present a new downsampling method for structured volmue grids, which preserves much more of the topology of a scalar field than existing downsampling methods by preferable selecting scalar values of critical points. In ...

    • Hybrid Distance Field Computation 

      Satherley, Richard; Jones, Mark W. (The Eurographics Association, 2001)
      Distance fields are a widely investigated area within the area of Volume Graphics. Research is divided between applications; such as skeletonisation, hypertexture, voxelisation, acceleration of rendering techniques, ...

    • Parallelizing the ZSWEEP Algorithm for Distributed-Shared Memory Architectures 

      Farias, Ricardo; Silva, Claudio T. (The Eurographics Association, 2001)
      In this paper we describe a simple parallelization of the ZSWEEP algorithm for rendering unstructured volumetric grids on distributed-shared memory machines, and study its performance on three generations of SGI multiprocessors, ...

    • Efficient Space Leaping for Ray casting Architectures 

      Meißner, M.; Doggett, M.; Hirche, J.; Kanus, U. (The Eurographics Association, 2001)
      One of the most severe problems for ray casting architectures is the waste of computation cycles and I/O bandwidth, due to redundant sampling of empty space. While several techniques exist for software implementations to ...

    • vlib: A Volume Graphics API 

      Winter, Andrew S.; Chen, Min (The Eurographics Association, 2001)
      This paper describes vlib, a generic application programming interface for volume graphics which supports many of the significant developments in the field to date. We present an overview of the interface and describe how ...

    • A Technique for Volumetric CSG based on Morphology 

      Baerentzen, A.; Christensen, N. J. (The Eurographics Association, 2001)
      In this paper, a new technique for volumetric CSG is presented. The technique requires the input volumes to correspond to solids which fulfill a voxelization suitability criterion. Assume the CSG operation is union. The ...

    • A Volume Modeling Component of CAD 

      Jianwen, Zhou; Feng, Lin; Soon, Seah Hock (The Eurographics Association, 2001)
      This paper presents a framework we have developed for modeling and manipulation of volumetric data sets. It is a set of new functions integrated into a CAD system. We shall address freeform modeling through voxelization ...