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Calibrated 3-D Area Sensor

Photonics.com
Nov 2010
VRmagic Imaging GmbHRequest Info
 
MANNHEIM, Germany, Nov. 10, 2010 — For industrial image processing applications, VRmagic is offering a 3-D area sensor based on digital stripe light projection that supplies ready-calculated 3-D data records.

The AreaScan3D sensor outputs the recorded 3-D data to the evaluation computer via the industrial Ethernet interface. The data is output directly as a point cloud or a gray-scale-coded range map. The sensor is addressed via a GenICam transport layer (GenTL) and is compatible with all image processing libraries and packages that can already communicate with a GenTL, such as Common Vision Blox and Halcon.

Integrated into industrial installations via the Ethernet interface, the plug-and-play sensor features a robust metal housing with IP65 protection, screw-type standard industrial connectors, a 24-V connection, and hardware and software triggers. It is available with measuring fields ranging from a few millimeters up to a square meter.

It offers guaranteed accuracy in the submicrometer to millimeter range, depending upon the measuring field size. Stripe projection, image recording and generation of the point cloud are performed in an integrated manner based on a proprietary intelligent camera. The DLP pico projector from Texas Instruments and the camera are synchronized with a frequency of 60 Hz. Output of a complete 3-D data record is possible with approximately 360,000 individual points per scan.

The company says that, compared with traditional 2-D image processing, optical 3-D measurement with stripe light projection can offer more efficient and robust testing methods, particularly for inspection of objects with low contrast or under varying lighting conditions. The material color also does not have any influence on measuring accuracy. The sensor offers maximum external light stability through the use of a color LED combined with a bandpass filter.


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