LiDAR-Maps. and More for. Engineers. TechTime New Mapping Tools for Transportation Engineering. Airborne LiDAR. Digital Cameras

Transcription

1 LiDAR-Maps Airborne LiDAR and More for Digital Cameras Engineers and Their Applications Presenter: Azadeh Koohzare, Ph.D., P.Eng. Project Manager, Geodesy and Geomatics

2 ALS50-II Leica components (Leica LiDAR Manual, 2007) McElhanney s system Slide #2 26/05/2009 9:13:34

3 McElhanney s Cameras (linked to LiDAR) RGB and NIR Digital Cameras Rolleimetric AIC P65+ with RGB lens Rolleimetric AIC P45 with Near IR lens (same housing)

4 Components of LiDAR LiDAR Components: GPS Base - GPS - IMU (Inertial Measuring Unit) - Scanner

5 Designed Flight Lines Grouse Mt, B.C. Slide #5 26/05/2009 9:12:54 Slide #5 26/05/2009 9:12:54 AM

6 LiDAR Process Dense pickup of DEM mass points Data reduction using Airborne GPS/IMU Ground Kinematic Result Point cloud Data classification from point cloud to Bare Earth Creation of TIN s, Contours and other products

7 McElhanney s LiDAR Classification and Quality Control

8 LiDAR Quality Control From Stereo Photo or LiDARgrams Overlay Bare Earth Data Scan Images for voids and erroneous points HIGH DEGREE OF CONFIDENCE IN ALL DELIVERABLES

9 Photogrammetric WorkStation

10 Accuracy Expectations Vertical accuracies Based on Project Reports Grouse Mountain 10cm on Hard surfaces (95% confidence level) Kitsault 12cm on Gravel Surfaces Campbell River 20cm in Heavy Tree cover Horizontal accuracies vary depending on flying height and terrain surface

11 The Value of LiDAR Slide #11 26/05/2009 9:12:54 AM Page 8 of 32

12 LiDAR data by Elevation

13 Profile view of LiDAR data

14 Extracted LiDAR data over Orthophoto

15 Profile view of LiDAR data Slide #15 26/05/2009 9:12:54 AM

16 Transmission Line from LiDAR data Software can extract powerlines and store in vector format.

17 Contours generated from LiDAR points

18 Shaded relief with contours generated from LiDAR points

19 Applications of LiDAR

20 Aerial Photograph Bare Earth LiDAR Kerr Sulphurets site 1000 m 100 m

21 Engineering Design (Transmission Lines) 3D City Model and Asset Management Applications Civil engineering & Infrastructure development Corridor mapping Spatial planning Flood monitoring Landslide monitoring Erosion monitoring Coastline monitoring Irrigation management Coastline Analysis and Protection Volumetric studies

22 Some Projects Kinskuch and Jade creek, near Stewart, BC Chilliwack Power Transmission 2008 Campbell River, BC. University of British Columbia Kerr-Sulphurets-Mitchellin site northern Terrace, BC Mtn Milligan, BC Skeena Flood Plain Mapping-2008 Abbotsford Development-2008 Grouse Mt site in Vancouver, B.C Galore Creek Mine site Galore Creek Mining Corp Pickle Lake Mine in northern Ontario-2008 Onion Creek - Smithers, BC Maroon Creek in north west B.C Fraser and Nechako River for hydraulic modeling Urban and mountainous areas for geo-technical applications 2007 SFPR Gateway Program Sechelt Inlet Land Development Sechelt Ledge/ Thornborough/ McNab Creek Land development Port Renfrew ND Lea Kitimat - PNG

23 RGB ImageryNIR Imagery Combined RGB and NIR Images + = Slide #23 26/05/2009 9:12:55 Slide #23 26/05/2009 9:12:55 AM

24 RGB and NIR Applications RGB Colour orthophoto Photogrammetric data capture NIR/CIR Agriculture Forest Classification Environmental Terrain Hazard Studies Municipal Impervious Surfaces Analysis

25 THANK YOU!