Wednesday, August 31, 2016

By the Numbers: Lasers and Cameras

  • 168:  The number of Megabytes of data created EVERY SECOND by each of our Mobile LiDAR systems when we fire the lasers and cameras at their maximum rates.
  • 150:  Weight in pounds of each of our 4 Mobile LiDAR systems.
  • 35:  Weight in pounds of each of the two onboard LiDAR sensors that comprise each of our systems.  The solid, machined-aluminum chassis of each sensor doubles as a giant heat-sink to dissipate internal heat generated by the sealed unit.
  • 2:  Number of hours it takes to transfer and test one of our Mobile LiDAR systems from its regular vehicle mount to our boat or UTV.
  • 1.2 Million:  Number of discrete laser shots each of our Mobile LiDAR systems is capable of generating EVERY second. 
  • 4.8 Million:  The astonishing number of measurements calculated by each LiDAR system every second.  Each discrete laser shot can result in up to 4 returns (1st, 2nd, 3rd, and Last).
  • 5:  The number of primary camera units deployed with each Mobile LiDAR system.  Four cameras can maneuvered to a myriad of locations along the vehicle and can simultaneously fire up to 2 frames per second (fps).  The 5th camera is our Ladybug 360 spherical unit, which can fire at a rate of 3 fps.
  • 6:  The number of individual cameras that are housed in the Ladybug spherical camera system – software automatically stitches the individual images together for spherical viewing. The versatile spherical camera unit also produces individual calibrated images that can be used to colorize the corresponding LiDAR point-cloud, or loaded into 3rd-party applications (such as our Orbit WebViewer) for overlay of the point-cloud.

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What is Mobile LiDAR?

Mobile LiDAR (Light Detection and Ranging) systems are comprised of vehicle-mounted lasers, cameras and GPS/INS navigation systems to capture highly-detailed and accurate three-dimensional (3D) topographic information for surveying and engineering applications. Michael Baker International became an early adopter of Mobile LiDAR technology by acquiring our first system in 2009, with further expansions in 2014 and 2015 that increased our fleet to four (4) Optech Lynx SG1 Mobile LiDAR systems. Over that period our systems have completed more than 300 projects throughout 29 different U.S. States (and multiple countries), and encompassing hundreds of thousands of miles. Our project portfolio includes applications in roadway design, 3D modeling, railroad corridors, signaled intersections, utility infrastructure, asset management, pavement condition assessment and airport infrastructure.