Department of Computer Science 2266 EB II 890 Oval Drive #8206 North Carolina State University Raleigh, North Carolina 27695-8206     Office:   2266 EB II   Driving directions Phone:   (919) 513-8112 Fax:   (919) 515-7896 e-mail:   healey@csc.ncsu.edu My name is Christopher Healey. I'm working as an Associate Professor at North Carolina State University. My research interests include computer graphics, scientific visualization, perception and cognitive vision, color, texture, databases, and computational geometry. Research Projects A visualization of the final plays during the 4th quarter of the 2008 Super Bowl game (New England's end zone on the left, New York's end zone on the right), where a last-minute touchdown by the New York Giants secured a win over the New England Patriots We are currently working on a project to visualize football game play-by-play, to see if this provides any useful insights into general team strategies, or specific techniques used at certain points in a game. A description of our parsing and visualization approaches, together with visualizations of all 11 games from the 2008 NFL playoffs, are available here. We are also working on a similar strategy for NCAA college football games. Visualizations of the 2007/2008 BCS Bowl Games are available here. Election Visualizations: We have recently completed collecting and visualizing voter results for U.S. Presidential, U.S. Senate, U.S. House, and state Gubernatorial elections, to study the validity of the common "red state" versus "blue state" classifications Perceptual Visualization: A study of the strengths and limitations of human perception, designed to assist with the construction of displays that support rapid, accurate, and effortless exploration and analysis of large, multidimensional datasets ViA: Visualization Assistant: An investigation of methods for providing semi-automated "visualization assistance", the use of perceptual rules and AI-based mixed-initiative search techniques to construct perceptually optimal visualizations based on dataset properties and a viewer's analysis needs Assisted Navigation: Techniques that combine local detail, global overviews, tracking of viewer interests, and graph traversal and camera planning techniques to assist viewers in navigating large, complex information spaces Visualizing Network Intrusions A combination of intrusion correlation algorithms with scientific visualization and human-computer interaction techniques specifically designed for network security analysis Extending Interface and Display in a Limited-Capability Environment: A study of the use of personal computing devices (PCDs) like personal digital assistants, next-generation cell phones, and portable game-playing devices to support general-purpose compute applications with sophisticated graphics and interface requirements Nonphotorealistic Visualization: The combination of painterly styles from the Impressionist movement and knowledge of human perception to construct painted or "nonphotorealistic" renditions of an underlying multidimensional dataset Visualizing E-Commerce Data: A study of techniques to visualize datasets that do not contain explicit spatial representations; candidate environments include financial data, web traces, and e–commerce datasets Feature Preserving Data Simplification: A study of the use of feature preserving mesh simplification to reduce the size and dimensionality of large, multidimensional datasets I am investigating visualization methods that support rapid, accurate, and effective exploration and analysis of large, complex, multidimensional datasets. Many of our techniques exploit the power of the low-level human visual system. This allows much of the analysis work to be performed effortlessly, without requiring focused attention. My results make use of research from an area of cognitive psychology called preattentive processing. A detailed overview of preattentive processing is available for those who are interested. I've applied results from our visualization research to real-world problems like: salmon migration simulations, medical imaging, simulated supernova collapse, scanning electron microscopes, weather and storm tracking, geographic information systems, e-commerce auction agents, painterly visualizations. Publications A list of publications is available online. This list includes complete citation information, as well as abstracts, and PDF for most of the papers. I also have a PDF version of my CV which is available for downloading. Some of the information in my CV is summarized in this web page. Schedule If you want to schedule an appointment with me, please check for available times in the calendar below. Courses Spring 2008     CSC 562: Graduate Computer Graphics (course outline), MWF 10:40-11:30, 1212 EB-II CSC 591V: Visual and Data Analytics (course outline), MWF 11:45-12:35, 1220 EB-II MSA 08: Visualization and Visual Analytics (course outline), 1:30-2:45, 165C Ven III Students Current students working under my supervision in our laboratory include: Ping-Lin Hsiao (PhD candidate) A complete list of current and past students is also available. Knowledge Discovery Laboratory Scientific visualization and computer graphics research is conducted in the Knowledge Discovery Laboratory (KDL) as part of a joint collaboration with human-computer interaction, data mining, and artificial intelligence. Dr. Jon Doyle, Dr. Dennis Bahler, Dr. Robert St. Amant, and associated students and research colleagues are also directing projects as part of KDL. Hardware resources include Sun Ultras and Sun Blades, SGI O2s, Dell Windows and Linux PCs, and RAID storage arrays by Dell and Network Appliance. We also have a Fakespace Mini Workbench, a 44-inch augmented virtual reality table that supports stereo display, ultrasonic head tracking, and 3D direct manipulation, and a Mitsubishi Diamondtouch table, a multi-user touch-sensitive tracking surface that presents calibrated images via a look-down projector. Graduate and undergraduate courses in computer graphics are taught in the Multimedia laboratory. IBM has made significant donations to the multimedia lab, the department, and the College of Engineering. We received a number of IBM IntelliStation NT workstations with accelerated OpenGL hardware support for graphics research. We are also using IBM's networking hardware to support our state-of-the-art network testing facilities. In December, 1998 we received a $117,000 equipment grant from Hewlett-Packard as part of their Engineering and Computer Science University Grants Program. This grant provided us with 25 HP Kayak NT workstations with accelerated OpenGL hardware support. These workstations are being used to support undergraduate and graduate courses in graphics, HCI, and multimedia. We have recently upgraded the lab with a number of Dell Precision PCs with 17-inch flat panels.