LiDAR-Maps Airborne LiDAR and More for Digital Cameras Engineers - - PowerPoint PPT Presentation

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LiDAR-Maps Airborne LiDAR and More for Digital Cameras Engineers - - PowerPoint PPT Presentation

Oct 15, 2022 337 likes •608 views

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

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Airborne LiDAR Digital Cameras and Their Applications

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LiDAR-Maps and More for Engineers

Presenter: Azadeh Koohzare, Ph.D., P.Eng. Project Manager, Geodesy and Geomatics AKoohzare@mcelhanney.com 604-683-8521

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Slide #2 26/05/2009 9:13:34 AM

ALS50-II Leica components (Leica LiDAR Manual, 2007)

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McElhanney’s system

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RGB and NIR Digital Cameras

Rolleimetric AIC P65+ with RGB lens Rolleimetric AIC P45 with Near IR lens (same housing)

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McElhanney’s Cameras (linked to LiDAR)

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GPS Base

LiDAR Components:

  • GPS
  • IMU (Inertial Measuring Unit)
  • Scanner

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Components of LiDAR

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Slide #5 26/05/2009 9:12:54 AM

Grouse Mt, B.C.

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Designed Flight Lines

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  • 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

LiDAR Process

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McElhanney’s LiDAR Classification and Quality Control

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  • Overlay Bare Earth Data
  • Scan Images for voids and

erroneous points

HIGH DEGREE OF CONFIDENCE

IN ALL DELIVERABLES

From Stereo Photo or LiDARgrams

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LiDAR Quality Control

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Photogrammetric WorkStation

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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

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Slide #11 26/05/2009 9:12:54 AM

The Value of LiDAR

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LiDAR data by Elevation

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Extracted LiDAR data over Orthophoto

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Profile view of LiDAR data

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Transmission Line from LiDAR data

Software can extract powerlines and store in vector format.

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Contours generated from LiDAR points

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Shaded relief with contours generated from LiDAR points

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Applications

  • f LiDAR
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Aerial Photograph

Kerr Sulphurets site

1000 m 100 m

Bare Earth LiDAR

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  • Civil engineering & Infrastructure development
  • Corridor mapping
  • Spatial planning
  • Flood monitoring
  • Landslide monitoring
  • Erosion monitoring
  • Coastline monitoring
  • Irrigation management
  • Coastline Analysis and Protection
  • Volumetric studies
  • Engineering Design (Transmission Lines)
  • 3D City Model and Asset Management Applications
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  • Kinskuch and Jade creek, near Stewart, BC.– 2008
  • Chilliwack Power Transmission– 2008
  • Campbell River, BC. University of British Columbia -2008
  • Kerr-Sulphurets-Mitchellin site northern Terrace, BC. -2008
  • Mtn Milligan, BC. -2008
  • Skeena Flood Plain Mapping-2008
  • Abbotsford Development-2008
  • Grouse Mt site in Vancouver, B.C. -2008
  • Galore Creek Mine site Galore Creek Mining Corp. - 2008
  • Pickle Lake Mine in northern Ontario-2008
  • Onion Creek - Smithers, BC. -2008
  • Maroon Creek in north west B.C. -2008
  • Fraser and Nechako River for hydraulic modeling- 2008
  • 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

Some Projects

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Slide #23 26/05/2009 9:12:55 AM

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RGB Imagery NIR Imagery Combined RGB and NIR Images

+ =

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GB and NIR and NIR Applica pplications tions

NIR/CIR

  • Agriculture
  • Forest Classification
  • Environmental Terrain Hazard Studies
  • Municipal Impervious Surfaces Analysis

RGB

  • Colour orthophoto
  • Photogrammetric data capture
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THANK YOU!