31 March 2016 Phase unwrapping for fringe projection three-dimensional measurement with projector defocusing
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Abstract
For high-speed three-dimensional shape measurement, techniques with projector defocusing have become increasingly important. When the projector is defocused, structured patterns used for phase unwrapping are blurred. These blurred patterns need to be normalized into binary distributions in actual measurement. We propose a method to normalize these blurred structured patterns. The retrieved absolute phase is correct even when the measured objects contain discontinuous parts or contrasting colors.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Dongliang Zheng, Feipeng Da, Heming Huang, "Phase unwrapping for fringe projection three-dimensional measurement with projector defocusing," Optical Engineering 55(3), 034107 (31 March 2016). https://doi.org/10.1117/1.OE.55.3.034107 . Submission:
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