We propose a method for reconstructing non-diffuse surfaces based on theπ-phase-shifted two-plus-one phase-shifting method.First,we introduce a 2fH+a+2fM+2f_(L)method for unwrapped phase extraction.Subsequently,we in...We propose a method for reconstructing non-diffuse surfaces based on theπ-phase-shifted two-plus-one phase-shifting method.First,we introduce a 2fH+a+2fM+2f_(L)method for unwrapped phase extraction.Subsequently,we introduce a new set ofπ-phase-shifted 2fH+a/2+2fM+2f_(L)fringe patterns with halved background intensity.The saturated pixels will be replaced with the unsaturated pixels in theπ-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.展开更多
基金supported by the Natural Science Foundation of Shandong Province(Nos.ZR2021MF024 and ZR2020QF101)the National Natural Science Foundation of China(Nos.62273274 and 62001263).
文摘We propose a method for reconstructing non-diffuse surfaces based on theπ-phase-shifted two-plus-one phase-shifting method.First,we introduce a 2fH+a+2fM+2f_(L)method for unwrapped phase extraction.Subsequently,we introduce a new set ofπ-phase-shifted 2fH+a/2+2fM+2f_(L)fringe patterns with halved background intensity.The saturated pixels will be replaced with the unsaturated pixels in theπ-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.
