3-D shape measurement of complex objects by combining photogrammetry and fringe projection

A new concept for 3-D shape measurement of complex objects is proposed, whi ch is based on photogrammetry and fringe projection. The shape of a partial view is determined by a combination of the phase-shift method for fringe e valuation and a photogrammetric triangulation to calculate the 3-D coordina tes related to the sensor coordinate system. For the measurement of complex objects, partial views are taken from different sensor positions. The prob lem of matching the partial views into each other is solved by transforming each sensor position and the relating point cloud of the shape in a global coordinate system by photogrammetric matching of reference targets. (C) 20 00 society of Photo-Optical Instrumentation Engineers. [S0091-3286(00)02701 -X].