Browsing VG01: Volume Graphics Workshop 2001 by Title
Now showing items 11-27 of 27
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Image-Based Rendering of Surfaces from Volume Data
(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 ... -
Parallelizing the ZSWEEP Algorithm for Distributed-Shared Memory Architectures
(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, ... -
Real-Time Volume Rendering for Virtual ColonoscopyS
(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 ... -
Refraction in Discrete Ray Tracing
(The Eurographics Association, 2001)Refraction is an important graphics feature for synthesizing photorealistic images. This paper presents a study on refraction rendering in volume graphics using discrete ray tracing. We describe four basic approaches for ... -
Segmentation of Biological Volume Datasets Using a Level-Set Framework
(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 ... -
Splatting With Shadows
(The Eurographics Association, 2001)In this paper we describe an efficient approach to add shadows to volumetric scenes. The light emitted by the lightsource is properly attenuated by the intervening volumetric structures before it is reflected towards the ... -
A Study of Transfer Function Generation for Time-Varying Volume Data
(The Eurographics Association, 2001)The proper usage and creation of transfer functions for time-varying data sets is an often ignored problem in volume visualization. Although methods and guidelines exist for time-invariant data, little formal study for the ... -
A Survey of Methods for Volumetric Scene Reconstruction from Photographs
(The Eurographics Association, 2001)Scene reconstruction, the task of generating a 3D model of a scene given multiple 2D photographs taken of the scene, is an old and difficult problem in computer vision. Since its introduction, scene reconstruction has found ... -
A Technique for Volumetric CSG based on Morphology
(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 ... -
Topology-Guided Downsampling
(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 ... -
Translucent and Opaque Direct Volume Rendering for Virtual Endoscopy Applications
(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 ... -
Two-Pass Image and Volume Rotation
(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, ... -
Visualization of Labeled Segments Cross-Contour Surfaces
(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 ... -
vlib: A Volume Graphics API
(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 ... -
Volume Graphics Modeling of Ice Thawing
(The Eurographics Association, 2001)Image synthesis of natural phenomena is one of the fundamental research areas in volume graphics. Since the pursuit of photoreality requires physically-based computation at the cost of interactivity, much more attention ... -
A Volume Modeling Component of CAD
(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 ... -
Volume Visualization of Payoff Regions for Derivatives Risk Management
(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 ...