Ray-based phase error correction for miniaturized DOE projector-based FPP under single-directional hyperbolic projection

• URL: http://arxiv.org/abs/2607.15139v1
• Date: Thu, 16 Jul 2026 15:43:07 GMT
• Title: Ray-based phase error correction for miniaturized DOE projector-based FPP under single-directional hyperbolic projection
• Abstract summary: Fringe Projection Profilometry (FPP) systems using miniaturized DOE pro-jectors often suffer from severe phase artifacts.<n>We propose a ray-based phase error correction framework that models phase artifacts along projection rays from the projector pinhole.<n>Experiments on DOE projector-based FPP systems demonstrate significant improvements in reconstruction accuracy under nonlinear projection conditions.
• Score: 0.866627581195388
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Fringe Projection Profilometry (FPP) systems using miniaturized DOE pro-jectors often suffer from severe phase artifacts due to nonlinear projection characteristics and limited pattern controllability. We propose a ray-based phase error correction framework that models phase artifacts along projection rays from the projector pinhole, incorporating projector geometry without re-lying on image-domain processing or neighboring pixels. A projector pinhole estimation method based on a single-directional hyperbolic fringe pattern is introduced, through which projector geometry can be recovered without stereo calibration. In addition, a data-efficient strategy constructs the re-finement model from a single calibration pose. Experiments on miniaturized DOE projector-based FPP systems demonstrate significant improvements in reconstruction accuracy under nonlinear projection conditions, confirming the robustness and physical consistency of the proposed approach.

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