visualization can facilitate the understanding of the structures of a collection of documents that are related to each other by links, such as citations in formal publications. We present results of visualizing minimu...
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visualization can facilitate the understanding of the structures of a collection of documents that are related to each other by links, such as citations in formal publications. We present results of visualizing minimum spanning trees based on document co-citation counts and on document citation correlations.
We discuss 3d interaction techniques for the quantitative analysis of spatial relations in medical visualizations. We describe the design and implementation of measurement tools to measure distances, angles and volume...
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We discuss 3d interaction techniques for the quantitative analysis of spatial relations in medical visualizations. We describe the design and implementation of measurement tools to measure distances, angles and volumes in 3d visualizations. The visualization of measurement tools as recognizable 3d objects and a 3d interaction, which is both intuitive and precise, determines the usability of such facilities. Measurements may be carried out in 2d visualizations of the original radiological data and in 3d visualizations. The result of a measurement carried out in one view is also displayed in the other view appropriately. We discuss the validation of the obtained measures. Finally, we describe how some important measurement tasks may be solved automatically.
This paper describes the visualization of global solar radiation data for teaching and research. ERA-40 data (1957-2002) [7,8] from the ECMWF model [6] was processed into annual and monthly averages over 45 years. A c...
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This paper describes the visualization of global solar radiation data for teaching and research. ERA-40 data (1957-2002) [7,8] from the ECMWF model [6] was processed into annual and monthly averages over 45 years. A collaborative and iterative design methodology, including perceptually validated color progression was used. The data was visualized via Python's matplotlib (basemap) module. The results (maps and animations), data and python code can be downloaded from https://***/solarRadiationMaps.
This paper describes BM3D: a method for the analysis of motion in time dependent volume data. From a sequence of volume data sets a sequence of vector data sets representing the movement of the data is computed. A blo...
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ISBN:
(纸本)9780780374980
This paper describes BM3D: a method for the analysis of motion in time dependent volume data. From a sequence of volume data sets a sequence of vector data sets representing the movement of the data is computed. A block matching technique is used for the reconstruction of data movement. The derived vector field can be used for the visualization of time dependent volume data. The method is illustrated in two applications.
This paper presents a new technique for visualizing large, complex collections of data. The size and dimensionality of these datasets make them challenging to display in an effective manner. The images must show the g...
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This paper presents a new technique for visualizing large, complex collections of data. The size and dimensionality of these datasets make them challenging to display in an effective manner. The images must show the global structure of spatial relationships within the dataset, yet at the same time accurately represent the local detail of each data element being visualized. We propose combining ideas from information and scientific visualization together with a navigation assistant, a software system designed to help users identify and explore areas of interest within their data. The assistant locates data elements of potential importance to the user, clusters them into spatial regions, and builds underlying graph structures to connect the regions and the elements they contain. Graph traversal algorithms, constraint-based viewpoint construction, and intelligent camera planning techniques can then be used to design animated tours of these regions. In this way, the navigation assistant can help users to explore any of the areas of interest within their data. We conclude by demonstrating how our assistant is being used to visualize a multidimensional weather dataset.
The proceedings contain 49 papers. The special focus in this conference is on Fluids, structures and data mining. The topics include: Fluid-structure interaction simulations using parallel computers;investigation of t...
ISBN:
(纸本)3540008527
The proceedings contain 49 papers. The special focus in this conference is on Fluids, structures and data mining. The topics include: Fluid-structure interaction simulations using parallel computers;investigation of turbulent flame kernels using DNS on clusters;A parallel, state-of-the-art, least-squares spectral element solver for incompressible flow problems;edge-based interface elements for solution of three-dimensional geomechanical problems;finite element simulation of seismic elastic two dimensional wave propagation;parallel implementation for probabilistic analysis of 3D discrete cracking in concrete;an a posteriori error estimator for adaptive mesh refinement using parallel in-element particle tracking methods;high performance data mining;data mining for data classification based on the KNN-fuzzy method supported by genetic algorithm;a major challenge for computational chemistry;high performance computing in electron microscope tomography of complex biological structures;visualization of RNA pseudoknot structures;the cactus framework and toolkit;performance of message-passing MATLAB toolboxes;evaluating the performance of space plasma simulations using FPGA’s;remote parallel model reduction of linear time-invariant systems made easy;an approach to teaching computer arithmetic;fast sparse matrix-vector multiplication for TeraFlop/s computers;performance evaluation of parallel gram-Schmidt re-orthogonalization methods;toward memory-efficient linear solvers;a parallel Newton-GMRES algorithm for solving large scale nonlinear systems;preconditioning for an iterative elliptic solver on a vector processor;a large scale electron scattering simulation dominated by the multiplication of dynamically changing matrices;a parallel implementation of the Atkinson algorithm for solving a fredholm equation.
Diffusion tensor imaging can provide unique information about the white matter architecture. The technique is unique in a sense that it can provide multiple contrasts depending on data processing methods. Based on the...
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Diffusion tensor imaging can provide unique information about the white matter architecture. The technique is unique in a sense that it can provide multiple contrasts depending on data processing methods. Based on the fiber orientation information, three-dimensional reconstruction of tract trajectories is also possible. In the paper, possibilities and limitations of various DTI-based visualization techniques are discussed.
The proceedings contain 40 papers. The special focus in this conference is on Image Retrieval, Modelling, Feature Based Retrieval and Video Retrieval. The topics include: Challenges of image and video retrieval;visual...
ISBN:
(纸本)9783540438991
The proceedings contain 40 papers. The special focus in this conference is on Image Retrieval, Modelling, Feature Based Retrieval and Video Retrieval. The topics include: Challenges of image and video retrieval;visualization, estimation and user-modeling for interactive browsing of image libraries;semantics-based image retrieval by region saliency;a linear image-pair model and the associated hypothesis test for matching;on the coupled forward and backward anisotropic diffusion scheme for color image enhancement;multiple regions and their spatial relationship-based image retrieval;query by fax for content-based image retrieval;spectrally layered color indexing;using an image retrieval system for vision-based mobile robot localization;JPEG image retrieval based on features from DCT domain;image retrieval methods for a database of funeral monuments;visual clustering of trademarks using the self-organizing map;object-based image retrieval using hierarchical shape descriptor;content based analysis for video from snooker broadcasts;spin images and neural networks for efficient content-based retrieval in 3D object databases;a demonstrator on randomly generated curves;an efficient coding of three dimensional colour distributions for image retrieval;content-based retrieval of historical watermark images;extracting semantic information from basketball video based on audio-visual features;video indexing and retrieval for archeological digital library;video retrieval by feature learning in key frames;a ranking algorithm using dynamic clustering for content-based image retrieval and personal construct theory as a research tool for analysing user perceptions of photographs.
Enterprise-class web sites receive a large amount of traffic, from both registered and anonymous users. data warehouses are built to store and help analyze the click streams within this traffic to provide companies wi...
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Enterprise-class web sites receive a large amount of traffic, from both registered and anonymous users. data warehouses are built to store and help analyze the click streams within this traffic to provide companies with valuable insights into the behavior of their customers. This article proposes a parallel sequence mining algorithm, webSPADE, to analyze the click streams found in site web logs. In this process, raw web logs are first cleaned and inserted into a data warehouse. The click streams are then mined by webSPADE. An innovative web-based front-end is used to visualize and query the sequence mining results. The webSPADE algorithm is currently used by Verizon to analyze the daily traffic of the *** web site.
Effective power system operation requires power system engineers and operators to analyze vast amounts of information. The authors have developed several techniques for visualizing large amounts of data including cont...
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ISBN:
(纸本)0769514359
Effective power system operation requires power system engineers and operators to analyze vast amounts of information. The authors have developed several techniques for visualizing large amounts of data including contouring, animated flows, and 3D visualization. These techniques have been completely integrated into PowerWorld Simulator, an offline system study tool for use in the energy industry. Integrating these visualization techniques with real-time data sources, such as those available in energy control centers, however, has presented a separate challenge to the wide dissemination of these visualization abilities. The paper presents a case study of integrating these abilities with control centers that utilize the Plant Information (PI) System for data storage and archival. Projects have been completed that integrate these visualization techniques into control centers for Commonwealth Edison in Lombard, Illinois and City Water Light and Power in Springfield, Illinois. A separate pilot project has also been completed with the Tennessee Valley Authority.
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