High Value Manufacturing – Bártolo et al. (Eds)
© 2014 Taylor & Francis Group, London, ISBN 978-1-138-00137-4
Error compensated camera-projector calibration in shape measurement
D. Li & J. Kofman
Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
ABSTRACT: In surface-shape measurement based on fringe projection, camera-projector stereovision, and
the heterodyne temporal phase unwrapping, residual random phase errors in the wrapped phase maps can lead
to spike-like errors near the beat frequency in the computed unwrapped phase map. If the spike-like errors
correspond to control points in the camera image, the corresponding projector-image control point coordinates
cannot be correctly determined and the projector ...