Filters








40,342 Hits in 5.2 sec

Scientific Discovery through Advanced Visualization

Kwan-Liu Ma, Greg Schussman, Eric B Lum, Hongfeng Yu, Hiroshi Akiba, Min-Yu Huang, Yue Wang
2005 Journal of Physics, Conference Series  
The SciDAC program of the Department of Energy has brought together tremendous scientific expertises and computing resources to realize the promise of terascale computing for attempting to answer some  ...  Scientific visualization is an indispensable path to gleaning insight from the massive data produced by terascale simulations.  ...  opportunities to learn about their visualization challenges and work on their data sets.  ... 
doi:10.1088/1742-6596/16/1/068 fatcat:jiwfepwcanba7kgosph3oscw3m

Efficient Interactive Pre-integrated Volume Rendering [chapter]

Heewon Kye, Helen Hong, Yeong Gil Shin
2005 Lecture Notes in Computer Science  
Pre-integrated volume rendering has become one of the most efficient and important techniques in three dimensional medical visualization. It can produce high-quality images with less sampling.  ...  We demonstrate performance gain and decreasing memory consumption for typical renditions of volumetric data sets.  ...  Even though they used a twodimensional pre-integration table, it is still bulky when rendering high-precision data such as 12 bits-per-voxel data which is common in medical applications.  ... 
doi:10.1007/11428862_118 fatcat:f3t3s6oz6vcq7djefcdkwyf46e

Interactive High-Quality Volume Rendering with Flexible Consumer Graphics Hardware [article]

Klaus Engel, Thomas Ertl
2002 Eurographics State of the Art Reports  
classification, high-quality filtering, pre-integrated classification and pre-integrated volume rendering, large volume visualization and volumetric effects.  ...  The goal of this report is to deliver insight into the new possibilities that programmable state-of-the-art graphics hardware offers to the field of interactive, high-quality volume rendering.  ...  Acknowledgements We would like to thank Joe Kniss, Christof Rezk-Salama, Markus Hadwiger and Martin Kraus for providing images and illustrations for this report. Web-Links Semian:  ... 
doi:10.2312/egst.20021051 fatcat:cxp4gmwpznccpis3kr3ozm5zsm

VIZARD II: A Reconfigurable Interactive Volume Rendering System [article]

M. Meißner, U. Kanus, G. Wetekam, J. Hirche, A. Ehlert, W. Straßer, M. Doggett, P. Forthmann, R. Proksa
2002 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware - HWWS '04  
This paper presents a reconfigurable, hardware accelerated, volume rendering system for high quality perspective ray casting.  ...  Adding new features, such as pre-integrated classification, can be accomplished using the existing card without expensive and time consuming redesigns.  ...  Compared to the point based classification, we use less precision for the opacity because pre-integration does not require high oversampling factors to remove artifacts, but we use more precision for the  ... 
doi:10.2312/eggh/eggh02/137-146 fatcat:dnt2o5auanbhtpapusjkjivkye

Recent advances in hardware-accelerated volume rendering

Kwan-Liu Ma, Eric B. Lum, Shigeru Muraki
2003 Computers & graphics  
Their pre-integrated volume rendering technique reduces color and opacity integration errors by using two texture samples, one from each of a pair of neighboring slices, and a 2-D lookup table texture  ...  [6] extend the pre-integration method to render an isosurface using view aligned polygon slices that transverse a 3-D texture and achieve a 1 frame=s rendering rate for 256 Â 256 Â 256 volume data using  ... 
doi:10.1016/s0097-8493(03)00146-8 fatcat:uq3o6t2jfvbalkshnntf35nxii

High-quality pre-integrated volume rendering using hardware-accelerated pixel shading

Klaus Engel, Martin Kraus, Thomas Ertl
2001 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware - HWWS '01  
It is suitable for new flexible consumer graphics hardware and provides high image quality even for low-resolution volume data and non-linear transfer functions with high frequencies, without the performance  ...  The performance does neither depend on the number of isosurfaces nor the definition of the transfer functions, and is therefore suited for interactive highquality volume graphics.  ...  Acknowledgments We would like to thank Eckhart Traber of ELSA AG for providing a GeForce3-based graphics card just in time.  ... 
doi:10.1145/383507.383515 fatcat:s77xsukm6nevxifuifuioueuse

High-Quality Unstructured Volume Rendering on the PC Platform [article]

Stefan Guthe, Stefan Roettger, Andreas Schieber, Wolfgang Strasser, Thomas Ertl
2002 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware - HWWS '04  
For the visualization of volume data the application of transfer functions is used widely.  ...  By combining this approach with a hardware-accelerated calculation of the pre-integration table, we achieve both high quality visualizations and interactive classification updates.  ...  Part of this work has been funded by the SFB grant 382 of the German Research Council (DFG).  ... 
doi:10.2312/eggh/eggh02/119-125 fatcat:mvtugyfptvamrdkquw5hd3tg4i

Real-Time Volume Graphics [article]

Klaus Engel, Markus Hadwiger, Joe M. Kniss, Christof Rezk-Salama
2006 Eurographics State of the Art Reports  
Participants will learn techniques for harnessing the power of consumer graphics hardware and high-level shading languages for real-time rendering of volumetric data and effects.  ...  This full-day tutorial covers high-quality real-time volume rendering techniques for consumer graphics hardware.  ...  The authors would like to thank Christian Sigg for important input. The VRVis research center is funded in part by the Austrian Kplus project. The medical data sets are courtesy of Tiani MedGraph.  ... 
doi:10.2312/egt.20061064 fatcat:r6dixu2b4zgkzjdhp24557y2vu

Using pre-integrated Transfer Functions in an Interactive Software System for Volume [article]

Guenter Knittel
2002 Eurographics State of the Art Reports  
We explore possibilities to implement classification based on pre-integrated transfer functions in a software system for high-speed volume rendering.  ...  For high rendering performance, all parameters must be available in the L1-cache of the CPU, which is usually by far too small to hold the required tables.  ...  Acknowledgments This work was done for the SFB 382 funded by the DFG, Deutsche Forschungsgemeinschaft. UltraVis is a joint Research Project of HP Labs, Palo Alto, CA, and WSI/GRIS.  ... 
doi:10.2312/egs.20021047 fatcat:7agutldxnrhfncaeppr3hgapba

Hardware-Assisted Projected Tetrahedra

A. Maximo, R. Marroquim, R. Farias
2010 Computer graphics forum (Print)  
We apply a CUDA-based visibility ordering achieving rendering and sorting performance of over 6 M Tet/s for unstructured datasets.  ...  Both vertex and geometry shaders are used to compute the tetrahedral projection, while the volume ray integral is evaluated in a fragment shader; hence, volume rendering is performed entirely on the GPU  ...  We also thank the anonymous reviewers of this paper for their valuable comments, Dr. Varshney for his help and esteemed insights, and Dr. Kwan-Liu Ma for providing the Turbulent Jet dataset.  ... 
doi:10.1111/j.1467-8659.2009.01673.x fatcat:hn5v5nbif5fjlcticbcu5aifwa

Two-Level Interaction Transfer Function Design Combining Boundary Emphasis, Manual Specification and Evolutive Generation

Francisco Moura Pinto, Carla Freitas
2006 Computer Graphics and Image Processing (SIBGRAPI), Proceedings of the Brazilian Symposium on  
Direct volume rendering plays an important role in the investigation of volumetric data. In order to display these data, their values must be associated to optical properties.  ...  The combination of these strategies offers precise control over the transfer function specification, plus some interactive guidance, as well as semi-automatic and evolutive search in the TF space.  ...  Prauchner and his co-authors for kindly providing us their tool, which was the starting point of ours, and the colleagues from the CG group of UFRGS that served as subjects in our informal evaluation.  ... 
doi:10.1109/sibgrapi.2006.45 dblp:conf/sibgrapi/PintoF06 fatcat:faolqt6ahbcetjncy55lkfb7ae

Volume and Isosurface Rendering with GPU-Accelerated Cell Projection

R. Marroquim, A. Maximo, R. Farias, C. Esperança
2008 Computer graphics forum (Print)  
With this, common computers can be turned into vectorial machines specifically designed for volume rendering.  ...  We present a GPU-based implementation of a well-known algorithm -the Projected Tetrahedra (PT) of Shirley and Tuchman [ST90] -for interactive volume visualization and manipulation.  ...  Acknowledgments We would like to thank Rodrigo Espinha and Waldemar Celes for providing us with their implementation of HARC algorithm.  ... 
doi:10.1111/j.1467-8659.2007.01038.x fatcat:7nq43sf62zep3gxpgpj3yvcnmy

Integrating pre-integration into the shear-warp algorithm

J. P. Schulze, M. Kraus, U. Lang, T. Ertl
2003 International Workshop on Volume Graphics, Proceedings of the  
This paper presents the implementation of pre-integrated volume rendering in the shear-warp algorithm for parallel projection to overcome this drawback.  ...  The shear-warp volume rendering algorithm is one of the fastest algorithms for volume rendering, but it achieves this rendering speed only by sacrificing interpolation between the slices of the volume  ...  We would like to thank Günter Knittel for the fruitful discussion about the appropriate sampling rate for volume rendering with post-classification.  ... 
doi:10.1145/827051.827068 fatcat:j44od3jbsfhi7eufxecbs5mmgi

Spectral volume rendering using GPU-based raycasting

Magnus Strengert, Thomas Klein, Ralf Botchen, Simon Stegmaier, Min Chen, Thomas Ertl
2006 The Visual Computer  
Our implementation shows a promising performance for a number of real data sets. Particularly, we obtain up to 100 times the performance of a comparable CPU implementation.  ...  Traditional volume rendering does not incorporate a number of optical properties that are typically observed for semi-transparent materials, such as glass or water, in the real world.  ...  The data sets used are courtesy of UNC at Chapel Hill (Head) and the Department of Radiology, University of Iowa (Foot).  ... 
doi:10.1007/s00371-006-0028-0 fatcat:muuqmlgd65deflnt65ja25pbne

Multi-dimensional transfer function design based on flexible dimension projection embedded in parallel coordinates

Hanqi Guo, He Xiao, Xiaoru Yuan
2011 2011 IEEE Pacific Visualization Symposium  
In our design, the PCP showing the data distribution of each variate dimension and the MDS showing reduced dimensional features are integrated seamlessly to provide flexible feature classification for  ...  a) (b) Figure 1: Volume visualization of multivariate data (Hurricane Isabel) with our proposed interface of transfer function design.  ...  ACKNOWLEDGEMENTS The authors wish to thank the anonymous reviewers for their comments.  ... 
doi:10.1109/pacificvis.2011.5742368 dblp:conf/apvis/GuoXY11 fatcat:o3oro5diwfabnpas3o5w4qlzea
« Previous Showing results 1 — 15 out of 40,342 results