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2011
Conference Paper
Title

Fringe projection based high speed 3D sensor for real-time measurements

Abstract
A sensor based on fringe projection technique was developed which allows ultrafast measurements of the surface of flat measuring objects which realizes a data acquisition rate up to 8.9 million 3D points per second. The high measuring velocity was achieved by consequent fringe code reduction and parallel data processing. Fringe sequence length was reduced using geometric constraints of the sensor arrangement including epipolar geometry. Further reduction of the image sequence length was obtained by omission of the Gray code sequence by using the geometric constraints of the measuring objects. The sensor may be used e.g. for inspection of conductor boards.
Author(s)
Bräuer-Burchardt, C.
Breitbarth, A.
Kühmstedt, P.
Schmidt, I.
Heinze, M.
Notni, G.
Mainwork
Optical Measurement Systems for Industrial Inspection VII  
Conference
Conference "Optical Measurement Systems for Industrial Inspection" 2011  
DOI
10.1117/12.889459
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Keyword(s)
  • 3D measurement

  • fringe projection

  • real-time measurement

  • epipolar geometry

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