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Displaying 1-50 out of 50 total
A Data-Driven Approach to Hue-Preserving Color-Blending
Found in: IEEE Transactions on Visualization and Computer Graphics
By Lars Kuhne,Joachim Giesen,Zhiyuan Zhang,Sungsoo Ha,Klaus Mueller
Issue Date:December 2012
pp. 2122-2129
Color mapping and semitransparent layering play an important role in many visualization scenarios, such as information visualization and volume rendering. The combination of color and transparency is still dominated by standard alpha-compositing using the ...
 
Keynotes
Found in: 2014 IEEE Pacific Visualization Symposium (PacificVis)
By Klaus Mueller,Eduard Groller
Issue Date:March 2014
pp. xix-xx
These keynotes speeches discuss the following: Expanding the Universe- From Volume Rendering to High-Dimensional Data Visualization; Comparative Visualization.
   
SketchPadN-D: WYDIWYG Sculpting and Editing in High-Dimensional Space
Found in: IEEE Transactions on Visualization and Computer Graphics
By Bing Wang,Puripant Ruchikachorn,Klaus Mueller
Issue Date:December 2013
pp. 2060-2069
High-dimensional data visualization has been attracting much attention. To fully test related software and algorithms, researchers require a diverse pool of data with known and desired features. Test data do not always provide this, or only partially. Here...
 
Message from the Paper Chairs and Guest Editors
Found in: IEEE Transactions on Visualization and Computer Graphics
By Jason Dykes,David Laidlaw,Klaus Mueller,Giuseppe Santucci,Gerik Scheuermann,Matthew Ward,Chris Weaver
Issue Date:December 2012
pp. x-xii
This special issue includes papers that were presented at the IEEE Scientific Visualization Conference 2012 (SciVis 2012) and the IEEE Information Visualization Conference 2012 (InfoVis 2012), held together at IEEE VisWeek from 14-19 October 2012 in Seattl...
   
VDVR: Verifiable Volume Visualization of Projection-Based Data
Found in: IEEE Transactions on Visualization and Computer Graphics
By Ziyi Zheng, Wei Xu, Klaus Mueller
Issue Date:November 2010
pp. 1515-1524
Practical volume visualization pipelines are never without compromises and errors. A delicate and often-studied component is the interpolation of off-grid samples, where aliasing can lead to misleading artifacts and blurring, potentially hiding fine detail...
 
Conjoint Analysis to Measure the Perceived Quality in Volume Rendering
Found in: IEEE Transactions on Visualization and Computer Graphics
By Joachim Giesen, Klaus Mueller, Eva Schuberth, Lujin Wang, Peter Zolliker
Issue Date:November 2007
pp. 1664-1671
Visualization algorithms can have a large number of parameters, making the space of possible rendering results rather high-dimensional. Only a systematic analysis of the perceived quality can truly reveal the optimal setting for each such parameter. Howeve...
 
Guest Editors' Introduction: Special Section on IEEE Visualization Applications
Found in: IEEE Transactions on Visualization and Computer Graphics
By Eduard Groller, Kwan-Liu Ma, Klaus Mueller
Issue Date:September 2005
pp. 483-484
No summary available.
 
Splatting Errors and Antialiasing
Found in: IEEE Transactions on Visualization and Computer Graphics
By Klaus Mueller, Torsten Möller, J. Edward Swan II, Roger Crawfis, Naeem Shareef, Roni Yagel
Issue Date:April 1998
pp. 178-191
<p><b>Abstract</b>—This paper describes three new results for volume rendering algorithms utilizing splatting. First, an antialiasing extension to the basic splatting algorithm is introduced that mitigates the spatial aliasing for high-re...
 
Using GPUs to Crack Android Pattern-Based Passwords
Found in: 2013 International Conference on Parallel and Distributed Systems (ICPADS)
By Jaewoo Pi,Pradipta De,Klaus Mueller
Issue Date:December 2013
pp. 450-451
We investigate the strength of patterns as secret signatures in Android's pattern based authentication mechanism. Parallelism of GPU is exploited to exhaustively search for the secret pattern. Typically, searching for a pattern, composed of a number of nod...
 
Conformal Magnifier: A Focus+Context Technique with Local Shape Preservation
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xin Zhao, Wei Zeng,Xianfeng David Gu,Arie E. Kaufman, Wei Xu,Klaus Mueller
Issue Date:November 2012
pp. 1928-1941
We present the conformal magnifier, a novel interactive focus+context visualization technique that magnifies a region of interest (ROI) using conformal mapping. Our framework supports the arbitrary shape design of magnifiers for the user to enlarge the ROI...
 
A network-based interface for the exploration of high-dimensional data spaces
Found in: Visualization Symposium, IEEE Pacific
By Zhiyuan Zhang,Kevin T. McDonnell,Klaus Mueller
Issue Date:March 2012
pp. 17-24
The navigation of high-dimensional data spaces remains challenging, making multivariate data exploration difficult. To be effective and appealing for mainstream application, navigation should use paradigms and metaphors that users are already familiar with...
 
Message from the Paper Chairs and Guest Editors
Found in: IEEE Transactions on Visualization and Computer Graphics
By Frank van Ham,Raghu Machiraju,Klaus Mueller,Gerik Scheuermann,Chris Weaver
Issue Date:December 2011
pp. x-x
No summary available.
   
iView: A Feature Clustering Framework for Suggesting Informative Views in Volume Visualization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Ziyi Zheng,Nafees Ahmed,Klaus Mueller
Issue Date:December 2011
pp. 1959-1968
The unguided visual exploration of volumetric data can be both a challenging and a time-consuming undertaking. Identifying a set of favorable vantage points at which to start exploratory expeditions can greatly reduce this effort and can also ensure that n...
 
Efficient LBM Visual Simulation on Face-Centered Cubic Lattices
Found in: IEEE Transactions on Visualization and Computer Graphics
By Kaloian Petkov, Feng Qiu, Zhe Fan, Arie E. Kaufman, Klaus Mueller
Issue Date:September 2009
pp. 802-814
The Lattice Boltzmann method (LBM) for visual simulation of fluid flow generally employs cubic Cartesian (CC) lattices such as the D3Q13 and D3Q19 lattices for the particle transport. However, the CC lattices lead to suboptimal representation of the simula...
 
Color Design for Illustrative Visualization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Lujin Wang, Joachim Giesen, Kevin T. McDonnell, Peter Zolliker, Klaus Mueller
Issue Date:November 2008
pp. 1739-1754
Professional designers and artists are quite cognizant of the rules that guide the design of effective color palettes, from both aesthetic and attention-guiding points of view. In the field of visualization, however, the use of systematic rules embracing t...
 
Color-Space CAD: Direct Gamut Editing in 3D
Found in: IEEE Computer Graphics and Applications
By Neophytos Neophytou, Klaus Mueller
Issue Date:May 2008
pp. 88-98
Color-Space CAD is an interactive image-processing framework that lets users manipulate colors directly in 3D perceptual color space. Unlike traditional 2D color-manipulation tools, which often require multiple iterations, Color-Space CAD allows direct 3D ...
 
ClusterSculptor: A Visual Analytics Tool for High-Dimensional Data
Found in: Symposium On Visual Analytics Science And Technology
By Eun Ju Nam, Yiping Han, Klaus Mueller, Alla Zelenyuk, Dan Imre
Issue Date:November 2007
pp. 75-82
Cluster analysis (CA) is a powerful strategy for the exploration of high-dimensional data in the absence of a-priori hypotheses or data classification models, and the results of CA can then be used to form such models. But even though formal models and cla...
 
Visual Simulation of Heat Shimmering and Mirage
Found in: IEEE Transactions on Visualization and Computer Graphics
By Ye Zhao, Yiping Han, Zhe Fan, Feng Qiu, Yu-Chuan Kuo, Arie E. Kaufman, Klaus Mueller
Issue Date:January 2007
pp. 179-189
<p><b>Abstract</b>—We provide a physically-based framework for simulating the natural phenomena related to heat interaction between objects and the surrounding air. We introduce a heat transfer model between the heat source objects and th...
 
The Magic Volume Lens: An Interactive Focus+Context Technique for Volume Rendering
Found in: Visualization Conference, IEEE
By Lujin Wang, Ye Zhao, Klaus Mueller, Arie Kaufman
Issue Date:October 2005
pp. 47
The size and resolution of volume datasets in science and medicine are increasing at a rate much greater than the resolution of the screens used to view them. This limits the amount of data that can be viewed simultaneously, potentially leading to a loss o...
 
Dispersion Simulation and Visualization For Urban Security
Found in: Visualization Conference, IEEE
By Feng Qiu, Ye Zhao, Zhe Fan, Xiaoming Wei, Haik Lorenz, Jianning Wang, Suzanne Yoakum-Stover, Arie Kaufman, Klaus Mueller
Issue Date:October 2004
pp. 553-560
We present a system for simulating and visualizing the propagation of dispersive contaminants with an application to urban security. In particular, we simulate airborne contaminant propagation in open environments characterized by sky-scrapers and deep urb...
 
Methods for Efficient, High Quality Volume Resampling in the Frequency Domain
Found in: Visualization Conference, IEEE
By Aili Li, Klaus Mueller, Thomas Ernst
Issue Date:October 2004
pp. 3-10
Resampling is a frequent task in visualization and medical imaging. It occurs whenever images or volumes are magnified, rotated, translated, or warped. Resampling is also an integral procedure in the registration of multi-modal datasets, such as CT, PET, a...
 
Generating Sub-Resolution Detail in Images and Volumes Using Constrained Texture Synthesis
Found in: Visualization Conference, IEEE
By Lujin Wang, Klaus Mueller
Issue Date:October 2004
pp. 75-82
A common deficiency of discretized datasets is that detail beyond the resolution of the dataset has been irrecoverably lost. This lack of detail becomes immediately apparent once one attempts to zoom into the dataset and only recovers blur. Here, we descri...
 
A Frequency-Sensitive Point Hierarchy for Images and Volumes
Found in: Visualization Conference, IEEE
By Tomihisa Welsh, Klaus Mueller
Issue Date:October 2003
pp. 56
This paper introduces a method for converting an image or volume sampled on a regular grid into a space-efficient irregular point hierarchy. The conversion process retains the original frequency characteristics of the dataset by matching the spatial distri...
 
Empty Space Skipping and Occlusion Clipping for Texture-based Volume Rendering
Found in: Visualization Conference, IEEE
By Wei Li, Klaus Mueller, Arie Kaufman
Issue Date:October 2003
pp. 42
We propose methods to accelerate texture-based volume rendering by skipping invisible voxels. We partition the volume into sub-volumes, each containing voxels with similar properties. Sub-volumes composed of only voxels mapped to empty by the transfer func...
 
Interactive Transfer Function Modification For Volume Rendering Using Compressed Sample Runs
Found in: Computer Graphics International Conference
By Vivek Srivastava, Uday Chebrolu, Klaus Mueller
Issue Date:July 2003
pp. 8
This paper describes a software-based method for interactive transfer function modification. Our approach exploits the fact that, in general, a user will rarely want to modify the viewpoint and the transfer functions at the same time. In that spirit, we op...
 
Hardware Assisted Multichannel Volume Rendering
Found in: Computer Graphics International Conference
By Abhijeet Ghosh, Poojan Prabhu, Arie E. Kaufman, Klaus Mueller
Issue Date:July 2003
pp. 2
We explore real time volume rendering of multichannel data for volumes with color and multi-modal information. We demonstrate volume rendering of the Visible Human Male color dataset and photo-realistic rendering of voxelized terrains, and achieve high qua...
 
Interactive Transfer Function Modification for Volume Rendering Using Pre-Shaded Sample Runs
Found in: Computer Graphics and Applications, Pacific Conference on
By Vivek Srivastava, Uday Chebrolu, Klaus Mueller
Issue Date:October 2002
pp. 489
This paper describes a software-based method for interactive transfer function modification. Our approach exploits the fact that, in general, a user will rarely want to modify the viewpoint and the transfer functions at the same time. In that spirit, we op...
   
Space-Time Points: 4D Splatting on Efficient Grids
Found in: Volume Visualization and Graphics, IEEE Symposium on
By Neophytos Neophytou, Klaus Mueller
Issue Date:October 2002
pp. 97-106
4D datasets, such as time-varying datasets, usually come on 4D Cartesian Cubic (CC) grids. In this paper, we explore the use of 4D Body Centered Cubic (BCC) grids to provide a more efficient sampling lattice. We use this lattice in conjunction with a point...
 
Simulating Fire with Texture Splats
Found in: Visualization Conference, IEEE
By Xiaoming Wei, Wei Li, Klaus Mueller, Arie Kaufman
Issue Date:November 2002
pp. N/A
We propose the use of textured splats as the basic display primitives for an open surface fire model. The high-detail textures help to achieve a smooth boundary of the fire and gain the small-scale turbulence appearance. We utilize the Lattice Boltzmann Mo...
 
Graphical Strategies to Convey Functional Relationships in the Human Brain: A Case Study
Found in: Visualization Conference, IEEE
By Tomihisa Welsh, Klaus Mueller, Wei Zhu, Nora Volkow, Jeffrey Meade
Issue Date:October 2001
pp. N/A
Brain imaging methods used in experimental brain research such as Positron Emission Tomography (PET) and Functional Magnetic Resonance (fMRI) require the analysis of large amounts of data. Exploratory statistical methods can be used to generate new hypothe...
 
Optimized Software Splatting Using FastSplats on Rectilinear Grid
Found in: Visualization Conference, IEEE
By Jian Huang, Klaus Mueller, Naeem Shareef, Roger Crawfis
Issue Date:October 2000
pp. 40
Splatting is widely applied in many areas, including volume, point-based, and image-based rendering. Improvements to splatting, such as eliminating popping and color bleeding, occlusion-based acceleration, post-rendering classification and shading, have al...
 
Volumetric Backprojection
Found in: Volume Visualization and Graphics, IEEE Symposium on
By Klaus Mueller, Arie Kaufman, Frank Dachille
Issue Date:October 2000
pp. 109-117
Volumetric energy backprojection captures the effects of myriad physical processes including global illumination and reconstruction. We present a method to perform efficient volumetric backprojection in software. We develop a new method for global illumina...
 
Splatting Without The Blur
Found in: Visualization Conference, IEEE
By Klaus Mueller, Torsten Möller, Roger Crawfis
Issue Date:October 1999
pp. 61
Splatting is a volume rendering algorithm that combines efficient volume projection with a sparse data representation: Only voxels that have values inside the iso-range need to be considered, and these voxels can be projected via efficient rasterization sc...
 
High-Quality Splatting on Rectilinear Grids with Efficient Culling of Occluded Voxels
Found in: IEEE Transactions on Visualization and Computer Graphics
By Klaus Mueller, Naeem Shareef, Jian Huang, Roger Crawfis
Issue Date:April 1999
pp. 116-134
<p><b>Abstract</b>—Splatting is a popular volume rendering algorithm that pairs good image quality with an efficient volume projection scheme. The current axis-aligned sheet-buffer approach, however, bears certain inaccuracies. The effect...
 
Design of Accurate and Smooth Filters for Function and Derivative Reconstruction
Found in: Volume Visualization and Graphics, IEEE Symposium on
By Klaus Mueller, Raghu Machiraju, Roni Yagel, Yair Kurzion, Torsten Möller
Issue Date:October 1998
pp. 143-151
The correct choice of function and derivative reconstruction filters is paramount to obtaining highly accurate renderings. Most filter choices are limited to a set of commonly used functions, and the visualization practioner has so far no way to state his ...
 
Eliminating Popping Artifacts in Sheet Buffer-Based Splatting
Found in: Visualization Conference, IEEE
By Klaus Mueller, Roger Crawfis
Issue Date:October 1998
pp. 239
Splatting is a fast volume rendering algorithm which achieves its speed by projecting voxels in the form of pre-integrated interpolation kernels, or splats. Presently, two main variants of the splatting algorithm exist: (i) the original method, in which al...
 
Evaluation and Design of Filters Using a Taylor Series Expansion
Found in: IEEE Transactions on Visualization and Computer Graphics
By Torsten Möller, Raghu Machiraju, Klaus Mueller, Roni Yagel
Issue Date:April 1997
pp. 184-199
<p><b>Abstract</b>—We describe a new method for analyzing, classifying, and evaluating filters that can be applied to interpolation filters as well as to arbitrary derivative filters of any order. Our analysis is based on the Taylor serie...
 
Visual Correlation Analysis of Numerical and Categorical Data on the Correlation Map
Found in: IEEE Transactions on Visualization and Computer Graphics
By Zhiyuan Zhang,Kevin T. McDonnell,Erez Zadok,Klaus Mueller
Issue Date:February 2015
pp. 1
Correlation analysis can reveal the complex relationships that often exist among the variables in multivariate data. However, as the number of variables grows, it can be difficult to gain a good understanding of the correlation landscape and important intr...
 
The Reality Deck - Immersive Gigapixel Display
Found in: IEEE Computer Graphics and Applications
By Charilaos Papadopoulos,Kaloian Petkov,Arie Kaufman,Klaus Mueller
Issue Date:August 2014
pp. 1
We designed and built a next-generation visualization facility, the Reality Deck, that simultaneously offers state-of-the-art aggregate resolution and immersion. The Reality Deck is a 1.5 gigapixel immersive tiled display with a 360&amp;#x00BA; horizon...
 
A Structure-Based Distance Metric for High-Dimensional Space Exploration with Multidimensional Scaling
Found in: IEEE Transactions on Visualization and Computer Graphics
By Jenny Hyunjung Lee,Kevin T. McDonnell,Alla Zelenyuk,Dan Imre,Klaus Mueller
Issue Date:March 2014
pp. 351-364
Although the euclidean distance does well in measuring data distances within high-dimensional clusters, it does poorly when it comes to gauging intercluster distances. This significantly impacts the quality of global, low-dimensional space embedding proced...
 
SketchPadN-D: WYDIWYG Sculpting and Editing in High-Dimensional Space
Found in: IEEE Transactions on Visualization and Computer Graphics
By Bing Wang,Puripant Ruchikachorn,Klaus Mueller
Issue Date:December 2013
pp. 2060-2069
High-dimensional data visualization has been attracting much attention. To fully test related software and algorithms, researchers require a diverse pool of data with known and desired features. Test data do not always provide this, or only partially. Here...
 
Human Computation in Visualization: Using Purpose Driven Games for Robust Evaluation of Visualization Algorithms
Found in: IEEE Transactions on Visualization and Computer Graphics
By Nafees Ahmed,Ziyi Zheng,Klaus Mueller
Issue Date:December 2012
pp. 2104-2113
Due to the inherent characteristics of the visualization process, most of the problems in this field have strong ties with human cognition and perception. This makes the human brain and sensory system the only truly appropriate evaluation platform for eval...
 
A Practical Evaluation of Popular Volume Rendering Algorithms
Found in: Volume Visualization and Graphics, IEEE Symposium on
By Jian Huang, Klaus Mueller, Roger Crawfis, Dirk Bartz, Michael Meißner
Issue Date:October 2000
pp. 81-90
This paper evaluates and compares four volume rendering algorithms that have become rather popular for rendering datasets described on uniform rectilinear grids: raycasting, splatting, shear-warp, and hardware-assisted 3D texture-mapping. In order to asses...
 
Classification and Local Error Estimation of Interpolation and Derivative Filters for Volume Rendering
Found in: Volume Visualization and Graphics, IEEE Symposium on
By Torsten Möller, Raghu Machiraju, Klaus Mueller, Roni Yagel
Issue Date:October 1996
pp. 71
We describe a new method for analyzing, classifying, and evaluating filters, which can be applied to interpolation filters, and derivative filters. Our analysis is based on the Taylor series expansion of a convolution sum and some assumptions on the behavi...
 
Color-space CAD
Found in: ACM SIGGRAPH 2006 Sketches (SIGGRAPH '06)
By Klaus Mueller, Neophytos Neophytou
Issue Date:July 2006
pp. 122-es
We describe the interactive demonstration 'Instant Replay' to be shown at the Emerging Technologies at Siggraph 2006. Instant Replay is an example application of an inexpensive, highly accurate 'motion capture' system that is able to effectively track many...
     
Color-space CAD
Found in: Material presented at the ACM SIGGRAPH 2006 conference (SIGGRAPH '06)
By Klaus Mueller, Neophytos Neophytou
Issue Date:July 2006
pp. 122-es
We describe the interactive demonstration 'Instant Replay' to be shown at the Emerging Technologies at Siggraph 2006. Instant Replay is an example application of an inexpensive, highly accurate 'motion capture' system that is able to effectively track many...
     
Transferring color to greyscale images
Found in: Proceedings of the 29th annual conference on Computer graphics and interactive techniques (SIGGRAPH '02)
By Klaus Mueller, Michael Ashikhmin, Tomihisa Welsh
Issue Date:July 2002
pp. 581
We introduce a general technique for "colorizing" greyscale images by transferring color between a source, color image and a destination, greyscale image. Although the general problem of adding chromatic values to a greyscale image has no exact, objective ...
     
Volumetric backprojection
Found in: Proceedings of the 2000 IEEE symposium on Volume visualization (VVS '00)
By Arie Kaufman, Frank Dachille, Klaus Mueller
Issue Date:October 2000
pp. 109-117
From the Coliseum in Rome to the verdant landscape of the Loire Valley, the world's cultural heritage has withstood the text of time. Today though, the pace of progress --- from urban sprawl to pollution, neglect, conflict, and even tourism --- threatens t...
     
Design of accurate and smooth filters for function and derivative reconstruction
Found in: Proceedings of the 1998 IEEE symposium on Volume visualization (VVS '98)
By Klaus Mueller, Raghu Machiraju, Roni Yagel, Torsten Moller, Yair Kurzion
Issue Date:October 1998
pp. 143-151
From the Coliseum in Rome to the verdant landscape of the Loire Valley, the world's cultural heritage has withstood the text of time. Today though, the pace of progress --- from urban sprawl to pollution, neglect, conflict, and even tourism --- threatens t...
     
Transferring color to greyscale images
Found in: ACM Transactions on Graphics (TOG)
By Klaus Mueller, Michael Ashikhmin, Tomihisa Welsh
Issue Date:January 1991
pp. 230-230
We introduce a general technique for "colorizing" greyscale images by transferring color between a source, color image and a destination, greyscale image. Although the general problem of adding chromatic values to a greyscale image has no exact, objective ...
     
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