Improved self-correction of nonlinearity error in 3-step phase-shifting profilometry
Wen Zhang,
Ze Li,
Shuo Shan
et al.
Abstract:The generic self-correction method for nonlinearity-induced phase error (GSCN) can effectively suppress nonlinear error. However, GSCN directly ignores the periodic error of the 2N multiplication frequency in the error analysis stage, which still leads to errors in the suppressed results. In this paper, we propose a new method named improved generic self-correction method for nonlinearity-induced phase error in three-step phase-shifting profilometry. We retain the periodic error of the 2N multiplication freque… Show more
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