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Method for simultaneous measurement of 3-D shape and color information of complex objects

: Notni, G.H.; Kühmstedt, P.; Heinze, M.; Notni, G.

Verein Deutscher Ingenieure e.V. -VDI-, Kompetenzfeld Optische Technologien:
International Symposium on Photonics in Measurement 2002 : International Symposium, 11 - 12 June 2002, Aachen, Germany
Düsseldorf: VDI-Verlag, 2002 (VDI-Berichte 1694)
ISBN: 3-18-091694-X
International Symposium on Photonics in Measurement <2002, Aachen>
Fraunhofer IOF ()
shape measurement; fringe projection; color; calibration; virtual reality

Procedures for measuring the shape of objects using fringe projection are well known for many years. Those systems are suitable for instance for quality control and reverse engineering. For recognition and visualization of objects it's necessary to obtain the shape and also the color of the object's surface. But the use of color cameras has the lack of Jower frame rates and may cause shape measurement errors. We propose a method basing on fringe projection which is able to determine the 3-D co-ordinates as well as the color of all measurement points while using only black/white cameras. The main advantage is that color and shape are obtained together with the same camera and that the shape and color information are put together without any matching procedures. For this the object is illuminated within the same projection sequence with non structured colored light and the well known fringe patterns.