Scorpion 3D Stinger Scanner

Scorpion 3D Stinger Scanner produces 3D Images. The principle is to convert profiles from a standard laser triangulation system into 3D Image or pointcloud.

Scorpion 3D Stinger Conveyor Scanner Sample

We will explain the elements of a system like this:

Hardware and Software:

  • Industrial PC with Intel Quad Core CPU
  • Scorpion 3D Stinger Laser Triangulation Software
  • Scorpion 3D Stinger Camera for Laser Triangulation
    • Global Laser One Line Laser 10 mW
    • Tordivel Custom Calibration Target

Calibration:
Calibration is performed in two steps. First using Scorpion Calibrator tool to remove lens distortion and prepare the system for true sub-pixel operation. Secondly use ExternalReference to establish a laserplane reference system in mm.

What it looks like:
The image below shows the conveyor and two pizza buns being profiled. The laser spans across the 700 mm wide conveyor. The height of the pizza is measured with a resolution 0.1 mm in a dynamic area of 50 mm. The SingleLineFinder tool calculates more than 200 3D coordinates in 4 ms. The images is 1350 wide and 500 pixels high.

3DProfilerImage

3D Pointcloud or Image

With a conveyor speed of 0.3 m/s or 300 mm /s the hw trigged Scorpion 3D Stinger Camera delivers 60 images per second or profiles that is used to produce a 3D images with the spatial resolution 3 x 5 mm containing 12000 high precision 3D points.

3DModel

The image contains two pizza with uniform thickness of 20 mm.

Note: The 3D Imagers runs alone on a dedicated cpu-core.  Scorpion 3D Stinger can process profiles in realtime up to 150 or 200 profiles pr second pr core.  On a quad-core up to three profiles can be run in parallel at full speed.

Image Processing

When working with 3D Images the objects can be located with the  ConnectedComponents3D or MaMa3D tool. The image below shows the actual image converted to a heightmap using the ExtractMap3D tool.

HeightMap

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