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IEEE Symposium on visualization for Cyber Security (VizSec)

作者： Shaun P. Morrissey Georges Grinstein Institute for Visualization and Perception Research Department of Computer Science University of Massachusetts Lowell MA USA

Security configuration files are created and edited as text files. These files are the essential definition and control of the behavior of security devices. Despite their significant size, complexity, and the possibility of interaction between entries, no visually sophisticated tools exist that explicitly capture and visualize problematic interactions between rules to aid in the comprehension and modification of configuration files. Our initial work on the direct visualization of firewall configurations showed the limitations of visualizing just the range of packets that can be accepted. To visually capture the interactions between rules, we introduce the concept of a "created void." Created voids capture the information about destructive interactions between rules in a firewall ruleset, where an overlap between a deny rule prevents that packet from reaching an accept rule later in the ruleset. We present a lossless five-dimensional visualization of the convex solid decomposition of the set of acceptable packets from a firewall configuration, augmented with visual representations of created voids. This interactive visualization is embedded in a simple firewall ruleset editor, allowing the user to investigate the effect of changes in the ruleset.

关键词： visualization

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Combining Features for Shape and Motion Trajectory of Video Objects for Efficient Content Based Video Retrieval

Combining Features for Shape and Motion Trajectory of Video ...

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International Conference on Advances in Pattern Recognition (ICAPR)

作者： A. Dyana M.P. Subramanian Sukhendu Das Visualization and Perception Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai India

This paper proposes a system for content based video retrieval based on shape and motion features of the video object. We have used Curvature scale space for shape representation and Polynomial curve fitting for trajectory representation and retrieval. The shape representation is invariant to translation, rotation and scaling and robust with respect to noise. Trajectory matching incorporates visual distance, velocity dissimilarity and size dissimilarity for retrieval. The cost of matching two video objects is based on shape and motion features, to retrieve similar video shots. We have tested our system on standard synthetic databases. We have also tested our system on real world databases. Experimental results have shown good performance.

关键词： Shape Content based retrieval System testing Spatial databases Visual databases Polynomials Curve fitting Noise robustness Noise shaping Costs

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Integration of Region and Edge-based information for Efficient Road Extraction from High Resolution Satellite Imagery

Integration of Region and Edge-based information for Efficie...

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International Conference on Advances in Pattern Recognition (ICAPR)

作者： T.T. Mirnalinee Sukhendu Das Koshy Varghese Visualization and Perception Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai India Department of Civil Engineering Indian Institute of Technology Madras Chennai India

In remote sensing systems one of the most important features needed are roads, which require automated procedures to rapidly identify them from high-resolution satellite imagery, Many approaches for automatic road extraction have appeared in literature , which vary due to the differences in their goals, available information, algorithms used and assumptions about roads. In this paper, we propose an approach for automatic road extraction by integrating region and edge information. The complimentary information of road segments obtained using probabilistic SVM (PSVM) and road edges obtained using dominant singular measure (DSM) are integrated using a modified constraint satisfaction neural network - complementary information integration(CSNN-CII) to improve the accuracy of the system. Results are shown on real-world images and quantitatively evaluated with manual hand-drawn road layouts.

关键词： Data mining Image resolution Satellites Roads Image segmentation Support vector machines Neural networks Merging Feature extraction Geographic Information Systems

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Indoor versus outdoor scene classification using probabilistic neural network

Eurasip Journal on Advances in Signal Processing

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Eurasip Journal on Advances in Signal Processing 2007年 2007卷

作者： Gupta, Lalit Pathangay, Vinod Patra, Arpita Dyana, A. Das, Sukhendu Visualization and Perception Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai 600 036 India

We propose a method for indoor versus outdoor scene classification using a probabilistic neural network (PNN). The scene is initially segmented (unsupervised) using fuzzy C-means clustering (FCM) and features based on color, texture, and shape are extracted from each of the image segments. The image is thus represented by a feature set, with a separate feature vector for each image segment. As the number of segments differs from one scene to another, the feature set representation of the scene is of varying dimension. Therefore a modified PNN is used for classifying the variable dimension feature sets. The proposed technique is evaluated on two databases: IITM-SCID2 (scene classification image database) and that used by Payne and Singh in 2005. The performance of different feature combinations is compared using the modified PNN. Copyright © 2007 Hindawi Publishing Corporation. All rights reserved.

关键词： Image segmentation

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An Approach to Cartographic Object Extraction from High Resolution Satellite Imagery

An Approach to Cartographic Object Extraction from High Reso...

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International Conference on Computational Intelligence and Multimedia Applications

作者： T.T Mirnalinee Visualization and Perception Lab Department of Computer Science & Engineering Indian Institute of Technology Madras Chennai India

Of all tasks in photogrammetry the extraction of cartographic features is the most time consum

ISBN: (纸本)9780769530505;0769530508

Of all tasks in photogrammetry the extraction of cartographic features is the most time consum

关键词： Image resolution Roads Support vector machines Support vector machine classification Remote sensing Military satellites Geographic Information Systems Application software Feature extraction Shape

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DUAL SPACE BASED FACE RECOGNITION USING FEATURE FUSION

DUAL SPACE BASED FACE RECOGNITION USING FEATURE FUSION

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2006 IET International Conference on Visual Information Engineering

作者： Arpita Patra Sukhendu Das Visualization and Perception Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai India

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Coordinated views to assist exploration of spatio-temporal data: a case study

Coordinated views to assist exploration of spatio-temporal d...

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International Conference on Coordinated and Multiple Views in Exploratory visualization

作者： M.H. Shimabukuro E.F. Flores M.C.F. de Oliveira H. Levkowitz FCT-Faculdade de Ciências e Tecnologia Universidade Estadual Paulista (UNESP) Sao Paulo Brazil IVPR-Institute for Visualization and Perception Research Computer Science Department University of Massachusetts Lowell Lowell MA USA ICMC-Instituto de Ciências Matemáticas e de Computação Universidade de Sáo Paulo Sao Paulo Brazil

In this paper we focus on providing coordinated visual strategies to assist users in performing tasks driven by the presence of temporal and spatial attributes. We introduce temporal visualization techniques targeted at such tasks, and illustrate their use with an application involving a climate classification process. The climate classification requires extensive processing of a database containing daily rain precipitation values collected along over fifty years at several spatial locations in the Sao Paulo state, Brazil. We identify user exploration tasks typically conducted as part of the data preparation required in this process, and then describe how such tasks may be assisted by the multiple visual techniques provided. Issues related to the use of the multiple techniques by an end-user are also discussed.

关键词： computer aided software engineering Data visualization Spatial databases Visual databases Rain Data analysis computer science Face Geographic Information Systems Information systems

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Which comes first, usability or utility?

Which comes first, usability or utility?

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IEEE Conference on visualization

作者： G. Grinstein A. Kobsa C. Plaisant J.T. Stasko Institute for Visualization and Perception Research University of Massachusetts Lowell Lowell MA University of California School of Information and Computer Science Irvine CA Human Computer Interaction Laboratory University of Maryland College Park MD Georgia Institute of Technology College of Computing/GVU Center Atlanta GA

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DSVOL II - a distributed visualization and sonification application communicating via an XML-based protocol

DSVOL II - a distributed visualization and sonification appl...

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Brazilian Symposium on computer Graphics and Image Processing (SIBGRAPI)

作者： V.C.L. Salvador R. Minghim H. Levkowitz Instituto de Ciencias Matemáticas e de Computação Universidade de Sáo Paulo Sao Paulo Brazil Instituto de Ciencias Matematicas e de Computação Universidade de Sáo Paulo Sao Paulo Brazil Institute for Visualization and Perception Research Department of Computer Science University of Massachusetts Lowell MA USA

Distribution of the visualization process over the World Wide Web allows remote access to expensive resources, and the cooperation amongst teams of experts that are located in different places. This paper presents an architecture and a corresponding prototype implementation of a distributed system for visualization and sonification of scientific data. The distribution is accomplished by the addition of visualization and sonification servers, accessible over the Internet, and implemented using an XML-based SOAP (Simple Object Access Protocol) protocol. The system is an evolution of a previously-developed prototype, with improvement in the visualization and in the distribution aspects of the architecture. The former distribution scheme employed CORBA (Common Object Request Broker). A discussion on the use of both distribution tools is given in the light of visualization tasks.

关键词： Data visualization Internet Prototypes Simple object access protocol computer architecture Web server XML Distributed computing Java Application software

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Dimensional anchors: A graphic primitive for multidimensional multivariate information visualizations

Dimensional anchors: A graphic primitive for multidimensiona...

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1999 Workshop on New Paradigms in Information visualization and Manipulation, NPIVM 1999

作者： Hoffman, Patrick Grinstein, Georges Pinkney, David Institute for Visualization and Perception Research Computer Science Department University of Massachusetts Lowell LowellMA01854 United States

ISBN: (纸本)1581132549

We introduce a graphic primitive, called a dimensional anchor (DA), which facilitates the creation of new visualizations and provides insight into the analysis of information visualizations. The DA represents an attempt to provide a unified framework or model for a variety of visualizations, including Parallel Coordinates, scatter plot matrices, Radviz, Survey Plots and Circle Segments. A dimensional anchor is constructed by assigning values to parameters associated with various geometric graphic elements that encode the basics of the above visualizations. We define a visualization vector space in which all of the above visualizations and many new ones are represented by vectors. These encodings make it possible to perform a Grand Tour traveling from Parallel Coordinates to Survey Plot, and visiting many other visualizations in between. © Copyright 2000 ACM.

关键词： visualization

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