FME Usage for Mobile Mapping Based GIS Data

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Presented by Wesley Teskey and Mohamed Elhabiby of Micro Engineering Group
Abstract:
Mobile mapping involves driving a vehicle with cameras and/or laser scanning equipment mounted on the vehicle, in order to acquire geometric and schematic information for buildings, infrastructure and other notable features. A computer program called VISAT Station then utilizes image and/or 3D laser scanner data in order to produce GIS data outlining the positions key features (GIS data is in the form of points, lines and polygons). GIS data with accuracies of a few centimeters can be produced by using the image and/or 3D laser scanning information provided. FME is subsequently used to convert data formats for GIS data produced so that such data can be utilized by other computer programs to generate fully processed data for clients.

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FME Usage for Mobile Mapping Based GIS Data

  1. 1. FME Usage for Mobile MappingBased GIS DataWesley Teskey and Mohamed ElhabibySenior Geomatics Developer and METI Vice President April 25, 2012
  2. 2. Overview Who are we? (METI – Micro Engineering Tech Inc.) GIS data creation (points, lines and polygons) GIS data export using FME Processing data in CAD (and other environments) VISAT features and software usage Conclusion and Questions
  3. 3. Overview: What is VISAT?  Digital cameras  Global Positioning System (GPS)  Inertial Navigation  Odometer  Laser scanners
  4. 4. System Overview 6 cameras 2 laser scanners Integrated GPS, inertial navigation system and odometer Image capture at 1 to 10m interval Autonomy of 800 km/day High accuracy in all survey conditions
  5. 5. GIS Data Creation Using Camera Images  Point and click to add create GIS data  All data are fully georeferenced automatically
  6. 6. Pan to Left Facing Camera Six cameras take a frame at each epoch (van location) User can pan between camera frames
  7. 7. Pan to Right Facing Camera User uses different camera, or the same camera from different epochs, to generate 3D point, line and polygon data
  8. 8. User Defined Layer Structure The layer structure within the VISAT Station environment is fully user defined and customizable The user can also add new data features (such as “must enter” reference data for each GIS object created) Example Layer Structure:
  9. 9. Mapping View Overhead mapping view is visible for GIS data within VISAT Station
  10. 10. 3D View VISAT Station also has a 3D View window for visualization of GIS Data
  11. 11. FME is used to Export to CAD fromVISAT
  12. 12. 3D Terrain Surface in CAD from GIS Data All CAD data created from GIS export are fully georeferenced in a user selected coordinate system
  13. 13. Contour Map in CAD from GIS Data
  14. 14. GIS Data Profiles in CAD Southwest bound lane Traffic flow direction in orange (above)
  15. 15. GIS Southwest Bound LaneLongitudinal Profile
  16. 16. More VISAT Capabilities –Construction Example
  17. 17. More VISAT Capabilities –Using Planes
  18. 18. Other VISAT Capabilities Can utilize overhead (mosaic) imagery gathered from aircraft or satellite – this can help with data verification and accuracy Can utilize control points to improve data accuracy – the use of control points is integrated into the VISAT environment VISAT custom software is used for data logging (van driver does not need any special training); also, custom built server software is used to store data for client computers processing the data
  19. 19. Conclusion VISAT is used to create GIS data (points, lines and polygons) from mobile mapping imagery Laser scanning is also utilized Data from VISAT can be exported using FME into CAD (and other formats) VISAT software is designed for high accuracy and high speed data processing METI both sells VISAT technology and performs service work using the VISAT system
  20. 20. Thank You! Questions? For more information:  Wesley Teskey (w.teskey@meng-tech.com) and Mohamed Elhabiby (elhabiby@meng-tech.com)  Micro Engineering Tech Inc. (METI), 1716 16th Avenue NW, Suite 330, Calgary, Alberta T2M 0L7  Phone: 403-457-3112

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