© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 1 CAPCOG LiDAR Workshop April 12, 2007 Presented by: Jamie Young, Sanborn LiDAR Manager Andy Lucero, Sanborn Project Manager

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 2 Presentation Overview Sanborn Summary LiDAR Background Applications Workshop Open Discussion

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 3 Sanborn Overview Oldest mapping company in the US –Colorado Springs, CO Full Service GIS Solution –LiDAR –Aerial Photography –Orthophotos –Planimetric/Contour Mapping ESRI & QCoherent Business Partner ISO 9001:2000 Certified Company

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 4 Texas Experience  2006  LCRA  Texas Coastal  CAPCOG  Base Mapping Projects with special projects for:  City of Austin, Round Rock, Williamson Co., San Marcos, Georgetown, Cedar Park, Taylor, Buda, Lockhart, Hutto and Jarrell  2007 – LiDAR  LCRA, COA, COL, Travis Co, COF  FEMA Compliant  LAS, Intensity Imagery, Breaklines, Contours

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 5 LiDAR Light Detection and Ranging Aerial sensor Collects/scans data, either photons (reflected light) or laser pulses Aerial GPS (Global Positioning System) Based on GPS satellite triangulation, measures the location of the aircraft up to 0.1 second. IMU (Inertial Measurement Unit) Measures attitude (pitch/yaw/roll) of aircraft every.002 second. Ground GPS Measures the location of the aircraft up to 0.1 second relative to a known ground position

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 6 Sanborn Sensor Experience 5 Optech Sensors ranging in repetition rates of 25khz to 50 khz 3 Leica Sensors with repetition rates up to 85khz 3 Propriety systems no longer in production

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 7 Contour generation from Filtered Bare Earth LiDAR and LiDAR DEM Generation for Orthorectification Bare Earth Surface Model Contours Draped on Surface Contours Photography draped over LiDAR Data Contours Draped over Orthophotography

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 8 Transportation Infrastructure planning and management 1-foot Contours Draped over Digital Image Ground Based LiDAR of Overpass

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 9 Bare Earth Generation for county wide mapping Bare Earth Data Raw Data 0.7 meters Rural Collection

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 10 Bare Earth Generation for Flood Plain mapping Raw LiDAR Data Bare Earth Data 0.7 meter collection specification

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 11 Breakline Generation from intensity images for contours and Flow analysis 2 foot contours and Breaklines draped over 1 meter LiDAR generated Intensity Image

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 12 Utility Mapping Classified LiDAR - Ground, Buildings, Vegetation, Tower, and conductors Tower, Conductor and vegetation Classified LiDAR profile of Utility Mapping Project Oblique Of Classified LiDAR

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 13 Building Classification for 3-D Modeling Building Surface Model Generated from LiDAR 0.3 Meter Point Density Collection

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 14 Forestry and Biomass Applications Bare Earth Surface Vegetation Canopy draped over Bare Earth Surface

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 15 HCA and Facility Management Refinery Tank Farm collected at 0.3 meter point density

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 16 Emergency Management Applications 3-D rendering provided by Leica using Sanborn LiDAR Data Google Earth Image prior to Dam break LIDAR Surface Model 28 Hours after Dam break Taum Sauk Dam, Missouri Image of Dam Break

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 17 Security Management LiDAR of Bridge at 0.3 meter collection LiDAR of Mile High Stadium

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 18 Intensity Imagery Intensity Information associated with each point Provides “ortho like imagery” Horizontal accuracy is Based on Point density And re-sampling

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 19 Tide Differences ← Tidal difference  Tide changes can be edited out and Water is then classified to the water layer

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 20 LiDAR Sterecompilation (Lidargrammetry)

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 21 Vegetation Mapping and Analysis Vegetation surface class Street tree mapping

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 22 Building Extraction Morris County, NJ Example

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 23 Water Body Classification Lake on Map Lake before classification and elevation averaging Lake after classification and elevation averaging ARC Surface Model

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 24 Contour Representation – Filtered vs Enhanced

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 25 Vegetation Mapping and Analysis Vegetation surface class Street tree mapping

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 26 Lidar Change Detection Lidar t1 Lidar t2

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 27 Data Accuracy  Vertical accuracy required usually cm  Horizontal accuracy required usually 50 cm  Typical vertical accuracy achieved are 9-12 cm  Typical Horizontal accuracy achieved is cm  Data meets accuracy specification  BUT DOES NOT….  Line up between collection areas?  between collection Seasons?  between Different Sensors?

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. 28 Data Accuracy Separate sensor collection versus check point survey

© 2006, The Sanborn Map Company, Inc. Privileged and confidential information. Distribution or copying prohibited unless approved in writing. Thank you! Graphics provided by Leica