Tripod-based Systems

Prototype One (USU owned)

  • Based on Riegl Lidar and Mikrotron CMOS camera
  • Lidar is mounted on a two-axis motion platform
  • Lidar and the camera are looking at the same location all the time
  • For each Lidar shot, a 20x20 patch of pixels is captured and centered around the Lidar shot at the same instant in time
  • Maximum range is on the order of 400 to 800 meters
  • About 800 Lidar shots per second - relatively slow
  • Lidar data captured to portable PC over serial link
  • ElectroOptical (EO), or digital image, data captured to portable PC over CameraLink interface
  • Wireframe and associated texture information combined in post process to produce true 3D textured model

  • *Used extensively by RappidMapper for preliminary business development .

Prototype Two (IntelliSum owned)

  • Based on Riegl Z210i Lidar and ISG CMOS camera
  • Lidar rotates in azimuth while elevation scanning is performed with a mirror that rotates 20 times a second
  • Lidar and camera are looking at the same location at the same time
  • Lidar vertical scans occur 20 times per second
  • A 2048 high by 16 wide slice of CMOS image is captured 60 times per second
  • Lidar scans and EO slices are time tagged as captured
  • Post processing aligns the time tagged data for temporal correlation
  • About 20,000 Lidar shots per second - much faster
  • Lidar data captured to laptop PC over Ethernet
  • EO data captured to laptop PC over IEEE1394 (Firewire) interface
  • Wireframe and associated texture information combined in post process to produce true 3D textured model

  • *Used exclusively by RappidMapper in business development and service model

Prototype Three (IntelliSum owned)

  • Based on Riegl Z420i Lidar and ISG CMOS camera
  • Very similar to Prototype II except that beam divergence is less, gives better spatial resolution
  • A modified Lidar supplies a sync signal which is used to temporally correlate the capture of CMOS image slices
  • Lidar and texture data are now temporally correlated by default

  • *Was delivered to RappidMapper in January 2006; they expect to order 10 or 12 more over the next year.
    *A company in SLC is partnering to design and build integrated Texel cameras for the commercial market based on the CAIL licensed technology.

Prototype Four (InteliSUM owned)

  • Higher resolution images than Prototype Three

Contact Information:
Paul Israelson
paul.israelson@usu.edu
(435)797-8280