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• W4376644653 abstract "For fringe projection profilometry (FPP), the gamma effect of the camera and projector will cause non-sinusoidal distortion of the fringe patterns, leading to periodic phase errors and ultimately affecting the reconstruction accuracy. This paper presents a gamma correction method based on mask information. Since the gamma effect will introduce higher-order harmonics into the fringe patterns, on top of projecting two sequences of phase-shifting fringe patterns having different frequencies, a mask image is projected to provide enough information to determine the coefficients of higher-order fringe harmonics using the least-squares method. The true phase is then calculated using Gaussian Newton iteration to compensate for the phase error due to the gamma effect. It does not require projecting a large number of images, and only 2 × 3 phase shift patterns and 1 mask pattern minimum are required. Simulation and experimental results demonstrate that the method can effectively correct the errors caused by the gamma effect." @default.
• W4376644653 created "2023-05-17" @default.
• W4376644653 creator A5015033349 @default.
• W4376644653 creator A5030834608 @default.
• W4376644653 date "2023-05-25" @default.
• W4376644653 modified "2023-09-26" @default.
• W4376644653 title "Mask information-based gamma correction in fringe projection profilometry" @default.
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• W4376644653 doi "https://doi.org/10.1364/oe.492176" @default.
• W4376644653 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37381362" @default.
• W4376644653 hasPublicationYear "2023" @default.
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