3D4D present

Information about 3D4D present

Published on September 20, 2007

Author: rupi

Source: authorstream.com

Content

Slide1:  VISUALIZATION IN THE CONTEXT OF A ‘LABORATORY’ FOR COLLABORATIVE ENGINEERING AND PUBLIC HEALTH MOBILITY RESEARCH R. Hughes, S. Turner, H. Landphair, Jodi Naderi, and Mike Manser A Joint Venture Between The University of North Carolina Highway Safety Research Center and the Center for Transportation Safety of the Texas Transportation Institute Presented at: TRB Visualization in Transportation Workshop and Symposium Salt Lake City, Utah April 2002 Slide2:  The Challenge: Safe and accessible facilities for pedestrians and bicyclists are a necessary but not sufficient condition for increasing the perceived value of activity and the health related behaviors dependent upon that perception for their maintenance. 'Overweight and obesity are among the most pressing new health challenges we face today,' HHS Secretary Tommy G. Thompson 'Overweight and obesity may soon cause as much preventable disease and death as cigarette smoking' Surgeon General David Satcher Slide3:  Underlying Premise: It should be possible to design the built environment in ways that are not only conducive to mobility and safety, but also in ways that are conducive to the maintenance of improved public health. Slide4:  This is not another road building or sidewalk improvement project. Engineering ‘know-how’ is not the sole answer. The answer will require a concerted, multi-disciplinary effort drawing upon the combined strengths of the engineering and public health disciplines. Slide5:  The Notion of a ‘Laboratory’ 'To provide a state-of-the-art environment for conducting well controlled, collaborative research focusing on both the engineering as well as public health aspects of non-motorized travel.' TTI and HSRC CollaborationIMPROVING THE TOOLS FOR NON-MOTORIZED TRAVEL RESEARCH:  3D/4D Visualization Ped/Bike Randamp;D (PBIC) Real-Time Visual Simulation Computer Modeling Prototype and Full Operational Evaluations TTI and HSRC Collaboration IMPROVING THE TOOLS FOR NON-MOTORIZED TRAVEL RESEARCH Slide7:  Visualization in the Context of a Pedestrian Laboratory SIMULATOR 3D/4D VISUALIZATION COMPUTER MODELS REAL WORLD PROTOTYPE EVALUATION Slide8:  THE IDEA OF A SIMULATOR FOR PEDESTRIAN AND BICYCLE RESEARCH (EARLY RESEARCH FOR FHWA/FDOT) Slide9:  RANGE OF FACILITY TYPES SIDEWALKS TRAILS CROSSWALKS TRAFFIC CALMING TREATMENTS FUNCTIONAL REQUIREMENTS INTERSECTIONS CROSSWALKS SIDEWALKS TRAILS AND MULTI-USE PATHS TRAFFIC CALMING Slide10:  RANGE OF USERS MOTORIZED NON-MOTORIZED FUNCTIONAL REQUIREMENTS Slide11:  SELECTABLE VOLUMES AND MIX INDIVIDUAL AND COLLECTIVE MOVEMENT CHARACTERISTICS FUNCTIONAL REQUIREMENTS Slide12:  FACILITY DESIGN (MARKINGS, WIDTH, ALIGNMENT, ETC.) LIGHTING, ILLUMINATED AND FLASHING WARNINGS FUNCTIONAL REQUIREMENTS Slide13:  TRAFFIC CONTROL DEVICES (BOTH CONVENTIONAL AND PROPOSED INCLUDING ACCESSIBLE PEDESTRIAN SIGNALS (APS) FUNCTIONAL REQUIREMENTS Slide14:  Data Base Development dedicated in-house capability contractor supported Visual display overhead projection and projector type flat or curved surface (screen) helmet display (head and/or eye tracked) display resolution, brightness, and contrast SIMULATOR TECHNICAL REQUIREMENTS, CON’T Slide15:  SIMULATOR TECHNICAL REQUIREMENTS, CON’T Auditory Simulation 3D traffic sounds (attached to individual vehicles) ambient noise signals (e.g., APS) with correct locus of sound in terms of horizontal and vertical location of source and masking by traffic noise) Performance Measurement and Analysis sampling rates pedestrian and traffic-specific measures of performance on-line data reduction or post-processing Slide16:  Major Simulator Design Issues: Locomotion (moving through the environment) joystick, treadmill, pre-programmed path viewed either inside/out (from observer’s viewpoint or outside/in (from 3rd person perspective as in a ‘fly over’) Image Generation,Visual Data Base and Scene Content number of image generation (IG) channels required number of different ‘eye points’ required number of independently controllable moving objects (e.g.,pedestrians, vehicles) rules of engagement (collision detection and avoidance) strict rules or stochastic/probabilistic realism (e.g., articulation) Slide17:  ‘SIMNET’ (low cost,networked simulation (vehicle oriented), originally part of DARPA strategic computing initiative) Evolved into Distributed Interactive Simulation (DIS) ADST II Program (incorporating the dismounted soldier) STRICOM Naval Post Graduate School Lockheed-Martin Reality By Design Science and Technology Objectives (STOs) Individual Combatant andamp; Small Unit Operations Simulation Virtual Environments for Dismounted Soldier Simulation,Training,and Mission Rehearsal DoD 'Tech Base' Helmet Display Virtual Weapon Omni-Directional Treadmill Slide18:  Slide19:  Real time avi (movie) output from VisSim showing pedestrian crossing at pedestrian-actuated signal upstream from the roundabout (from NCSU Pullen Park simulation) Slide20:  Potential Site on TAMU Campus For Trail and Path Prototyping Slide21:  PBIC Pedestrian Research Needs PBIC Bicycle Research Needs Suitability of Research Setting Identification of Research-Specific Simulator Requirements Determining Most Appropriate Research Setting Slide22:  Ped and Bike Research Categories (Broad Areas) Demand Management and Forecasting Crash/Risk Analysis Facility Evaluation Design and Engineering (Standards andamp; Guidelines) Policy and Planning Land Use and Urban Design Enforcement and Education Health and Physical Activity ADA Issues (Ped Only) Slide23:  Ped and Bike Research Categories (Broad Areas) Demand Management and Forecasting Crash/Risk Analysis Facility Evaluation Design and Engineering (Standards andamp; Guidelines) Policy and Planning Land Use and Urban Design Enforcement and Education Health and Physical Activity ADA Issues (Ped Only) Slide24:  For Example: Factors that Increase Crashes/Injuries/Risk at Trail-Roadway Intersections Factors that Increase Crashes/Injuries/Risk at Midblock Locations Crash/Risk Analysis (Areas of Common Ped and Bike Research Needs) Slide25:  Health and Physical Activity (new research needs, customers, and funding sources) Research Needs (according to PBIC): Variables that Influence the Amount of Routine Walking for Leisure and Transportation Objective Measures of Walkability of Communities for Large Physical Activity Studies Strategies to Increase Walking to School Relationship Between Childhood Obesity and the Pedestrian and Open Space Environment New Customers/Funding Sources: Centers for Disease Control (CDC) Robert Wood Johnson Slide26:  Importance of the ‘laboratory’ from a visualization standpoint: Integrates 3D/4D photo-simulation/animation and real time applications. Incorporates high speed traffic models with high resolution 3D/4D graphic outputs Forces consideration of the commonality and/or compatibility of elements (e.g., representation of ‘traffic’) across various applications (e.g, simulator, traffic model, visualization, etc.) Extends use of visualization (in various applications) for soliciting user ‘perceptions’ of critical design elements. Slide27:  THE BOTTOM LINE A ‘pedestrian friendly’ and ‘bicycle friendly’ environment provides the ‘opportunity’ for persons to walk and/or ride. . . Slide28:  THE BOTTOM LINE A ‘pedestrian friendly’ and ‘bicycle friendly’ environment provides the ‘opportunity’ for persons to walk and/or ride. . . But will improved opportunity be sufficient to significantly increase the level of activity of the general public? Slide29:  THE BOTTOM LINE ‘Opportunity,’ without a change in how one values these activities, is not likely to change public behavior. Slide30:  THE BOTTOM LINE ‘Opportunity,’ without a change in how one values these activities, is not likely to change public behavior. What we have yet to do is to discover how our ‘science’ and ‘technology’ can be used to affect individual and public ‘values,’ per se, and in turn be a real agent for change. Slide31:  Go to: http://www.hsrc.unc.edu/research/human_virtual.htm FOR MORE INFORMATION Where you will also find: Overview of pedestrian ‘laboratory’ concept PBIC lists of pedestrian and bicycle research needs Draft functional requirements for HSRC-TTI simulator Link to download VisSim avi movie file showing roundabout application NCDOT Visualization Guidelines FDOT Risk Perception Study (the ‘virtual bike’ study) Technical summary of Key West visualization effectiveness study (CD also available) Future of simulation and modeling in the Florida DOT (strategic plan) For more information, contact: Dr. Ron Hughes (HSRC) 919-962-7411 (voice) 919-962-8710 (FAX) [email protected] For more information on the Pedestrian and Bicycle Information Center, go to: http://www.pedbikeinfo.org/ Slide32: 

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