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π-phase-shifted two-plus-one method for non-diffuse surface
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DOI：10.3788/COL202321.101202.png)
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Abstract
En 中文
We propose a method for reconstructing non-diffuse surfaces based on the pi-phase-shifted two-plus-one phase-shifting method. First, we introduce a 2f(H)+ a + 2f(M)+ 2f(L) method for unwrapped phase extraction. Subsequently, we introduce a new set of pi-phase-shifted 2f(H)+ a/2 + 2f(M)+ 2f(L) fringe patterns with halved background intensity. The saturated pixels will be replaced with the unsaturated pixels in the pi-phase-shifted fringe patterns. Finally, we analyze eight fringe replacement cases and give the corresponding phase calculation, and further give the general formulas. Experiments confirm that the sum of the phase error of the proposed method is 81.4% lower than that of the traditional method, and 61.5% lower than that of the adaptive fringe projection method.
Keywords:
non-diffusion
pi-phase shift
two-plus-one phase shift
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3.3
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4.0W
Citations:
7.6W
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