Creating Value. Delivering Solutions

Transcription

1 Creating Value Delivering Solutions

2 LIDAR...Light Detection and Ranging Technology from the military (1960 s) Rapid, highly accurate DEM coverage of large to medium sized project areas Feature extraction Complex 3D modeling

3 Image Grayscale Aerial View Points

4 Conventional Photogrammetric Small and Medium Scale Map/GIS Production Aerial Photography GPS Ground Control Aerotriangulation of Photography Digital Elevation and Vector Mapping Digital Orthophoto Map Production Final Map/GIS Products Using Airborne GPS in the Process Aerial Photography GPS Ground Control Aerotriangulation of Photography Digital Elevation and Vector Mapping Digital Orthophoto Map Production Final Map/GIS Products Using Airborne GPS with Inertial Navigation System in the Process Aerial Photography GPS Ground Control Aerotriangulation Digital Elevation and Vector Mapping Digital Orthophoto Map Production Final Map/GIS Products Using Airborne GPS with Inertial Navigation System and LIDAR in the Process Aerial Photography, GPS Ground Control Aerotriangulation, Digital Elevation and Vector Mapping Digital Orthophoto Map Production Final Map/GIS Products Start of Project 12 Weeks 22 Weeks 26 Weeks 32 Weeks

5 Small project areas Process Improvement Corridor Mapping Limited downtime Turn around time Accuracy Feature collection from the ground

6 Optech LYNX Mobile Mapper Specifications Accuracy: + 3cm Precision: < 7mm Range: 200m (400m corridor) Field of View: 360º Laser rotates: 9-15,000 RPM Measurement Rate: 200Khz Scanner Speed: Hz Returns per Shot: 4 (1 st, 2 nd, 3 rd, Last) iflex: Most advanced electronics ever Embedded Calibration/Hot Swappable Simultaneous LiDAR & imagery capture Digital Cameras: 2, 5 Mega-pixel Images Capture: < 5 frames/sec.

7 Dual Sensor System Minimize laser shadowing Optimize Field of View (FOV) Sensor will see everything behind the vehicle Sensor will see ~45º in front of vehicle Full 360º area coverage All sides captured Sensor arrangement facilitates effective corridor mapping.

8 Dual Sensor Collection

9 Atlanta Spaghetti Interchange In order to minimize traffic in the collection, our crew worked through the early morning hours to capture almost 20 different approaches to the I85 - I285 interchange in Northeast Atlanta. Called the "Spaghetti Interchange" by locals, the data capture for the trajectory shown to the right took approximately 2.5 hours. The Smoothed Best Estimate of Trajectory (SBET) provides a constant position and orientation of the vehicle to process with the laser range data to calculate X, Y and Z coordinates of all measured points (point cloud). The image to the left shows intensity merged with colorization by height (blues are lower than reds). The support structures, decking, retaining walls, barrier walls, and other roadway features were accurately captured with our vehicle traveling at mph.

10 Pipeline Delineation The Mobile LiDAR crew collected several roads around a heavy industrial area - including refineries and a railyard. Adjacent to and above our survey area was a complex labyrinth of pipes, fencing, railroad tracks and utilities. Making sense of all of the data could be quite daunting if looking at the entire collection. Utilizing animation, I've been able to illustrate how clipping the information can yield a new perspective. The video is a simple animation compiled showing a pipe ladder that we drove under. All of the information depicted was captured in seconds. The photograph shows the pipe ladder as taken with one of the onboard cameras.

11 Pittsburgh International Airport

12 Operational Efficiency Less Down Time Collect day or night LiDAR is an active sensor and does not require visible light Stay on Schedule Expanded collection window Work around localized events and weather Large project areas collected faster than traditional surveys Fewer Staff and Safety Never a need for more than 2-person collection crew Eliminate Lane Closures Cost Effective Realize up to 40% cost-savings over traditional surveys Capture volumes more data, and in fine-detail

13 Safety Reduce unsafe conditions for field staff Eliminate Lane Closures Don t play chicken with traffic

14 Data Confidence Everything is Captured Inundate the site with high-density scan information Images are gathered utilizing on-board cameras Each pixel is assigned an X,Y,Z coordinate Calibrated Images (easy scene comprehension) Revisit the project site from your desktop 5 frames per second (3-5m) Images are geo-referenced Quality Deliverables Complete scenes, not just linear and points Ability to look at from many angles and aspects Configured for any users environment CADD, Geodatabase High-precision promotes Change Detection Repeatable, reliable results allow for seamless integration with past surveys

15 Multiple Survey Platforms Motor Vehicle Urban Environments Levees Highways Railroad Off-Road Karst Topography (bedrock) Beaches Mining Hydrographic Coastal Environments Bridges Locks/Dams

16 Roadway Mapping Easily & Efficiently collect ALL road characteristics and transportation assets.

17 Airport Manholes

18 Scan of Runway 32/50

19 Airport Tunnel

20 Information Completeness Complete coverage with a single pass Avoid costly site revisits Fully visualize a site instead of connecting dots Integrate with airborne or static sensors for saturated coverage and extended applications

21 Roadway Assessment Pavement Striping Asphalt Surface Concrete Surface Median Barrier

22 Roadway Stress/Alligator Cracking

23 Corridor Mapping Right-of-Way Railway Proposed Corridors Levees Drainage Pipe Integrated Camera provides mechanism for QC and review.

24 Cross-Sections Quickly Create Cross- Sections to review: Slope Fill As-Builts No Reliance on predefined stations

25 Railway Applications Identify and Inventory assets such as: Signals and Signs Switch Equipment Crossties and Ballasts Crossing Signals Bridge and Overhead Structures Sight Distances Track Conditions Frost-Heaves Settlement

26 Vegetation Encroachments Utilize track centerline to locate vegetation encroachments for scheduling eradication or herbicidal.

27 Buildings & Structures

28 Bridge Inspections Use multiple survey platforms to collect complete 360 coverage. Detailed Inventory for: Girders Decking Suspension Cables Underside Support Structures

29 ALTA Surveys & As-Builts ALTA Surveys Rest assured all requirements of complex ALTA surveys are met by completely saturating a site. Avoid costly go-backs As-Built Surveys Provides the flexibility to quickly capture information to review on-going construction.

30 Utility Substation

31 3D Animations and Rendering 3D Rendering Develop models of buildings for use in: Historic Preservation Coastal Flood Hazards Planning and Redevelopment 3D Animation Obtain a complete 360 perspective and build custom animations for: Line of Sight Analysis Flooding Crime/Accident Scenes

32 Additional Products Vertical/Elevation Bare Earth Models Contours TIN s Cross Sections Change Detection Time-Series DEM DEM depicting change Volumetric Analysis Cut-Fill Calculated Value DEM Base/Crest elevation models Surveying & Mapping 2D / 3D CAD Drawings MicroStation Design Files Spatially-enabled Databases

33 TRB (SHRP2) Naturalistic Driving Study The SHRP 2 Naturalistic Driving Study will involve instrumenting the vehicles of approximately 3000 volunteer drivers over a 2-year period ( ) with a data acquisition system (DAS). The DAS includes: forward radar; 4 video cameras, including one forward-facing, color, wide angle view; accelerometers, some vehicle network information; GPS; on-board computer vision lane tracking, as well as other computer vision algorithms; and data storage capability. Data from the DAS will be recorded continuously while the participant s vehicle is operating; this continuous recording allows for an exposure-based approach and is central to the SHRP 2 Safety Research Program. Study site boundaries are established by the S07 site contractors and range from an approximately 50- mile radius around a central city to multi-county areas. Each site will host participant vehicles. See Appendix A for study site descriptions. Seattle, Washington Erie County, New York Tampa Bay, Florida Central Indiana Central Pennsylvania Durham, North Carolina

34 Focus for the Future Health Wetlands Tracking disease Safety Roadway Improvements Fire Response Effective Management Data Sharing Resource Management Landbase Information Assets Tom Tiner GIT Manager