Customized Data Acquisition Technology
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The Software >
Accu3D systems are all designed and built as an open structure systems. Our patented software is not dependent on any particular hardware. The system can use any type of non-contact acquisition device that can provide the required data quality. The software also controls all light source(s) and mechanical moving components (turntables, linear stages, etc.).Data acquisition modes available >
Data acquisition technology >
Accu3D systems are designed and built to use one or multiple non-contact acquisition methods based on:
CLOSE RANGE DIGITAL PHOTOGRAMMETRY
By combining two perspectives (2D) of the same object, the extrapolation of the 3rd dimension
(Z axis) is possible. One or more cameras take images of an object. Processing the images
generates three-dimensional point (x-y-z) coordinates, which enables the creation of a
3D model using the known x-y-z coordinates for each point of interest.
For featureless objects (plain, or similar surfaces), points of interest are created by projecting
structured white, or laser light over an object's surface. For digitizing and creating a
dense point clouds, a coded light projection is used. Patented software and algorithms allow
for fully automated points matching and reconstruction of the object in 3D.
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Photogrammetry principle
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2D points matching and 3D reconstruction
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LASER SCANNING
The 3D laser scanner creates a point cloud of three dimensional points representing
the object scanned. Using a triangulation technique, the camera sensor captures
the profile and shape of the laser line which is swept across the object. As the laser
scanner or the object scanned moves, the camera builds up a series of profile 'slices'
resulting in a 3D model of scanned object.
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Principle of laser triangulation sensor
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Accu3D Laser Scanner
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LOW COHERENCE INTERFEROMETRY
A fiber-based profilometers are used for 3D surface characterization and dimensional
measurements where micron precision is required. Using a variety of small probes,
it is possible to measure hard-to-reach surfaces directly - such as diesel injectors,
gun barrels, and bladed disks (blisks). Using light sources in the near infrared range,
a fiber-based profilometer have ability to scan 2000 points per second at a precision
of 1 micron or better.
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Basic setup for low-coherence interferometry
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Measuring cooling air holes using interefrometry probe
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