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12th International Conference on Autonomous Agents and Multiagent Systems 2013, AAMAS 2013

作者： Tožička, Jan Balata, Jan Míkovec, Zdeněk Agent Technology Center Dept. of Computer Science Prague Czech Republic Department of Computer Graphics and Interaction FEE Czech Technical University Prague Czech Republic

ISBN: (纸本)9781627487665

Current UAV control systems can plan optimal trajectories with respect to predefined constraints (waypoints, no-fly zones). However when the operator is not satisfied with planned trajectories it is usually very complicated to force the system to change the trajectories in desired way. In this demonstration we solve this problem by innovative UAV control display based on diverse planning algorithm. Copyright © 2013, International Foundation for Autonomous Agents and Multiagent Systems (***). All rights reserved.

关键词： Unmanned aerial vehicles (UAV)

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BrainCove: A tool for voxel-wise fMRI brain connectivity visualization

BrainCove: A tool for voxel-wise fMRI brain connectivity vis...

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3rd Eurographics Workshop on VisualComputing in Biology and Medicine, EG VCBM 2012

作者： Van Dixhoorn, A.F. Milles, J. Van Lew, B. Botha, C.P. Computer Graphics and Visualization Dept. of INSY Delft University of Technology Delft Netherlands LKEB Dept. of Radiology Leiden University Medical Center Leiden Netherlands

ISBN: (纸本)9783905674385

Functional brain connectivity from fMRI studies has become an important tool in studying functional interactions in the human brain as a complex network. Most recently, research has started focusing on whole brain functional networks at the voxel-level, where fMRI time-signals at each voxel are correlated with every other voxel in the brain to determine their functional connectivity. For a typical 4mm isotropic voxel resolution, this results in connectivity networks with more than twenty thousand nodes and over 400 million links. These cannot be effectively visualized or interactively explored using node-link representations, and due to their size are challenging to show as correlation matrix bitmaps. In this paper, we present a number of methods for the visualization and interactive visual analysis of this new high resolution brain network data, both in its matrix representation as well as in its anatomical context. We have implemented these methods in a GPU raycasting framework that enables real-time interaction, such as network probing and volume deformation, as well as real-time filtering. The techniques are integrated in a visual analysis application in which the different views are coupled, supporting linked interaction. Furthermore, we allow visual comparison of different brain networks with side-by-side and difference visualization. We have evaluated our approach via case studies with domain scientists at two different university medical centers. © The Eurographics Association 2012.

关键词： Visualization

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A digital mobile choir: Joining two interfaces towards composing and performing collaborative mobile music 12th

A digital mobile choir: Joining two interfaces towards compo...

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12th International conference on New Interfaces for Musical Expression, NIME 2012

作者： D’alessandro, Nicolas Pon, Aura Wang, Johnty Eagle, David Sharlin, Ehud Fels, Sidney numediart – Institute for New Media Art Technology of the University of Mons MonsB-7000 Belgium Interactions Lab Dept. of Computer Science of the University of Calgary CalgaryT2N 1N4 Canada MAGIC – Media and Graphics Interdisciplinary Centre of the University of British Columbia VancouverV6T 1Z4 Canada Department of Music Faculty of Fine Arts of the University of Calgary CalgaryT2N 1N4 Canada

We present the integration of two musical interfaces into a new music-making system that seeks to capture the experience of a choir and bring it into the mobile space. This system relies on three pervasive technologies that each support a different part of the musical experience. First, the mobile device application for performing with an artificial voice, called ChoirMob. Then, a central composing and conducting application running on a local interactive display, called Vuzik. Finally, a network protocol to synchronize the two. ChoirMob musicians can perform music together at any location where they can connect to a Vuzik central conducting device displaying a composed piece of music. We explored this system by creating a chamber choir of ChoirMob performers, consisting of both experienced musicians and novices, that performed in rehearsals and live concert scenarios with music composed using the Vuzik interface. © 2012, Steering Committee of the International Conference on New Interfaces for Musical Expression. All rights reserved.

关键词： Music

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The Growth Rate of High-Dimensional Tree Polycubes

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Electronic Notes in Discrete Mathematics 2011年 38卷 25-30页

作者： Aleksandrowicz, Gadi Barequet, Gill Center for Graphics and Geometric Computing Dept. of Computer Science The Technion-Israel Inst. of Technology Haifa 32000 Israel

A d-dimensional polycube is a (d-1)-face-connected set of cubes in d dimensions. Fixed polycubes are considered distinct if they differ in shape or orientation. The cube-adjacency graph of a tree polycube is a tree. In this paper we investigate the asymptotic growth rate of d-dimensional tree polycubes, and estimate it at (2. d-3.5). e+. O(1/d). © 2011 Elsevier B.V.

关键词： Lattice animals Polyominoes

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Distributed image processing and classification for GIS based disaster management and communication system 11

Distributed image processing and classification for GIS base...

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Proceedings of the 2nd International Conference on Computing for Geospatial Research & Applications

作者： Jin, Ge Nicolai, Barbara Winer, Charles Jiang, Keyuan Dept. of Computer Information Technology and Graphics Purdue University Calumet 2200 169th St. Hammond IN 46323 United States

ISBN: (纸本)9781450306812

Natural disasters, such as hurricanes, tsunamis and earthquakes cause huge loss of life, enormous amounts of property damage, and lengthy recovery times. Although it is impossible to avoid the costs of disasters, human sufferings can be minimized through effective disaster management and decision support system that can facilitate and expedite the resource distribution process more efficiently and effectively. In this paper we utilized the high performance computing resources at Purdue University Calumet (PUC) to develop a disaster data management, visualization and decision supporting system that focuses on North West Indiana region. This paper focuses on three research objectives: 1) development of web-based disaster data management and communication system, 2) fast distributed computation of disaster related damage assessment and resource distribution strategy utilizing Miner Cluster, 3) interactive visualization of disaster affected populations, resource centers, as well as the resource distribution strategy. This research provides an efficient way for the local government agencies to process and manage disaster related information under adverse disaster conditions.

关键词： Disasters

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Querying relational MPEG-7 image database with MPEG query format

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous Engineering 2011年第4期6卷 29-44页

作者： Al-Zoubi, Mohammad Al-Zoubi, Alaa Dept. of Computer Graphics and Animation Princess Sumaya University for Technology Jordan Dept. of CIS Irbid University Irbid Jordan

The growth of multimedia is increasing the need for standards to access and search distributed repositories. Recently, the Moving Picture Experts Group (MPEG) has developed the MPEG Query Format (MPQF) to make multimedia access and search easier and interoperable across search engines and repositories. Since MPQF is not supported by any database products including native XML databases and relational databases, a translation of MPQF to the multimedia database query language is required. This paper presents a system for querying relational MPEG-7 image database with MPQF. A translation of selected query types from MPQF to SQL is proposed based on an especially designed relational schema that preserves typed data of the image descriptions.

关键词： Search engines

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Augmented reality prototype for visualising large sensors' datasets

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Telkomnika 2011年第1期9卷 161-170页

作者： Folorunso Olufemi, A. Mohd Shahrizal, S. Ikotun Abiodun, M. UTMVicubeLab Dept. of Graphics and Multimedia Universiti Teknologi Malaysia Malaysia Department of Computer Technology Yaba College of Technology Lagos Nigeria

This paper addressed the development of an augmented reality (AR) based scientific visualization system prototype that supports identification, localisation, and 3D visualisation of oil leakages sensors datasets. Sensors generates significant amount of multivariate datasets during normal and leak situations which made data exploration and visualisation daunting tasks. Therefore a model to manage such data and enhance computational support needed for effective explorations are developed in this paper. A challenge of this approach is to reduce the data inefficiency. This paper presented a model for computing information gain for each data attributes and determine a lead *** computed lead attribute is then used for the development of an AR-based scientific visualization interface which automatically identifies, localises and visualizes all necessary data relevant to a particularly selected region of interest (ROI) on the network. Necessary architectural system supports and the interface requirements for such visualizations are also presented.

关键词： Data visualization

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Formal specification for spatial information databases integration framework (SIDIF)

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Telkomnika 2011年第1期9卷 81-88页

作者： Man, Mustafa Jusuh, Julaily Aida Rahim, Mohd Shafry Mohd Zakaria, Mohammad Zaidi Dept. of Computer Science Fac. of Science and Technology Universiti Malaysia Terengganu 21030 Kuala Terengganu Terengganu Malaysia Det. of Computer Science Fac. of Computer Science and Information Technology Sultan Zainal Abidin 21030 Kuala Terengganu Terengganu Malaysia Dept. of Computer Graphics and Multimedia FSKSM Universiti Teknologi Malaysia 81310 UTM Skudai Johor Bahru Malaysia Dept. of Fisheries Science Fac. of Agro Technology and Food Science Universiti Malaysia Terengganu 21030 Kuala Terengganu Terengganu Malaysia

This paper discusses the formal validation for spatial information databases integration framework (SIDIF). A SIDIF database is a large, organized body of persistent data, usually associated with computerized software designed to update, query, and retrieve components of the data stored within the system. One of the common difficulties faced by the developer is in designing a robust database system. Even so, in order to solve this matter, developers have to focus their efforts on the formal specifications. The formal specification is supposed to reduce the overall development time. Formal specifications can be used to provide an unambiguous and precise supplement to natural language descriptions. Besides, it can be rigorously validated and verified leading to the early detection of specification errors. Consequently, to validate this problem formally, we specify the SIDIF database framework using Z language and prove by using Z/EVES theorem proven tool. By using this kind of tools, it may help to reduce time, energy and mistake compared to manual theorem proving which can be error task and tedious.

关键词： Formal specification

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On multiplicatively weighted voronoi diagrams for lines in the plane

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2011年 6750 LNCS卷 44-71页

作者： Vyatkina, Kira Barequet, Gill Dept. of Mathematics and Mechanics Saint Petersburg State University 28 Universitetsky pr. Stary Peterhof St Petersburg 198504 Russia Center for Graphics and Geometric Computing Dept. of Computer Science Technion-Israel Institute of Technology Haifa 32000 Israel Dept. of Computer Science Tufts University 161 College Ave. Medford MA 02155 United States

ISBN: (纸本)9783642226182

We describe a method based on the wavefront propagation, which computes a multiplicatively weighted Voronoi diagram for a set L of n lines in the plane in O(n2 logn) time and O(n2) space. In the process, we derive complexity bounds and certain structural properties of such diagrams. An advantage of our approach over the general purpose machinery, which requires computation of the lower envelope of a set of halfplanes in three-dimensional space, lies in its relative simplicity. Besides, we point out that the unweighted Voronoi diagram for n lines in the plane has a simple structure, and can be obtained in optimal Θ(n2) time and space. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： Machinery

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Disaster assessment with parallel image processing for GIS based local area disaster decision support system 10

Disaster assessment with parallel image processing for GIS b...

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1st International Conference and Exhibition on Computing for Geospatial Research and Application, COM.Geo 2010

作者： Nicolai, Barbara Jin, Ge Jiang, Keyuan Winer, Charles Dept. of Computer Information Technology and Graphics Purdue University Calumet 2200 169th St. Hammond IN 46323 United States

ISBN: (纸本)9781450300315

Natural disasters, such as hurricanes, tsunamis and earthquakes cause huge loss of life, enormous amounts of property damage, and lengthy recovery times. Although it is impossible to avoid the costs of disasters, human sufferings can be minimized through effective disaster management and decision support system that can facilitate and expedite the resource distribution process more efficiently and effectively. This paper is to present the design of GIS based disaster data management, visualization and decision support system for North West Indiana region utilizing grid computing and visualization resources at Purdue University Calumet (PUC). One of the key factors in the disaster management system is to provide damage assessment maps in timely manner. We propose a parallel image processing algorithm utilizing computational grid to compute the disaster damage assessment map from pre- and post- disaster satellite images. Disaster decision support system will compute the effective resource distribution strategy and prioritize the rescue areas by utilizing disaster specific geospatial information system. This research will lay a foundation for disaster preparedness, management and decision support system at local government agency level. © 2010 ACM.

关键词： Disasters

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