fme usage for mobile mapping based gis data
DESCRIPTION
Presented by Wesley Teskey and Mohamed Elhabiby of Micro Engineering GroupAbstract: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.TRANSCRIPT
FME Usage for Mobile Mapping Based GIS DataWesley Teskey and Mohamed ElhabibySenior Geomatics Developer and METI Vice President
April 25, 2012
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
Overview: What is VISAT?
Digital cameras Global Positioning System (GPS)
Inertial Navigation Odometer Laser scanners
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
GIS Data Creation Using Camera Images
Point and click to add create GIS data
All data are fully georeferenced automatically
Pan to Left Facing Camera
Six cameras take a frame at each epoch (van location)
User can pan between camera frames
Pan to Right Facing Camera
User uses different camera, or the same camera from different epochs, to generate 3D point, line and polygon data
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:
Mapping View
Overhead mapping view is visible for GIS data within VISAT Station
3D View
VISAT Station also has a 3D View window for visualization of GIS Data
FME is used to Export to CAD from VISAT
3D Terrain Surface in CAD from GIS Data
All CAD data created from GIS export are fully georeferenced in a user selected coordinate system
Contour Map in CAD from GIS Data
GIS Data Profiles in CAD
Southwest bound lane
Traffic flow direction in orange (above)
GIS Southwest Bound Lane Longitudinal Profile
More VISAT Capabilities – Construction Example
More VISAT Capabilities – Using Planes
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
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
Thank You!
Questions?
For more information: Wesley Teskey ([email protected]) and Mohamed Elhabiby ([email protected])
Micro Engineering Tech Inc. (METI), 1716 16th Avenue NW, Suite 330, Calgary, Alberta T2M 0L7
Phone: 403-457-3112