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I am excited to see that Velodyne's official homepage links to this post (see the link for "HDL-64E Product Demonstration").  While on their hompage, I was also reminded of the very cool, Grammy-Nominated RadioHead Music Video (see below) for the song "House of Cards" that features Velodyne-generated 3D point-clouds in addition to spatial data from Geometric Informatics' camera system.

 


 

To me, the most curious part of the video is where you can clearly make out the power lines in the urban point-clouds!  Power lines are generally quite small, making them difficult to resolve at large distances, yet the Velodyne seems to see them just fine -- impressive!  For those who are curious how this music video was produced, check out the video about the production below.

 


 

Finally, the processing source code and LIDAR scan data to build your own visualizations is available from Google Code, along with a fun web-app that lets you interactively explore a LIDAR scan.  When I get some spare time, I'll have to go take a look at how they're doing their cloud visualization -- most of the systems I've used are based on an OpenGL desktop application.

While I'm at it, I think it may be prudent to include more comprehensive specifications for the Velodyne HDL-64E (also found in PDF form).

Specifications for the Velodyne HDL-64E:

Sensor:

  • 64 lasers
  • 360 degree field of view (azimuth)
  • 0.09 degree angular resolution (azimuth)
  • 26.8 degree vertical field of view (elevation) -+ 2° up to -24.8° down with 64 equally spaced angular subdivisions (approximately 0.4°)
  • < 2 cm distance accuracy
  • 5-15 Hz field of view update (user selectable)
  • 50 meter range for pavement (~0.10 reflectivity)
  • 120 meter range for cars and foliage (~0.80 reflectivity)
  • >1.333M points per second
  • < 0.05 milliseconds latency

 

Laser

  • Class 1 - eye safe
  • 4 X 16 laser block assemblies
  • 905 nm wavelength
  • 5 nanosecond pulse
  • Adaptive power system for minimizing saturations and blinding

 

Mechanical

  • 12V input (16V max) @ 4 amps
  • < 29 lbs.
  • 10" tall cylinder of 8" OD diameter
  • 300 RPM - 900 RPM spin rate (user selectable)

 

Output

  • 100 Mbps UDP Ethernet packets

 

 

—Travis Deyle

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