ArXiv

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

2026-07-16 · 15:43 UTC ·Seung-Jae Son, Yatong An, Jae-Sang Hyun ·1 min read
Authors
Seung-Jae Son, Yatong An, Jae-Sang Hyun
Categories
cs.CV
arXiv
https://arxiv.org/abs/2607.15139v1
PDF
https://arxiv.org/pdf/2607.15139v1

Brief

Ray-based phase error correction for miniaturized DOE projector-based Fringe Projection Profilometry (FPP) targets severe phase artifacts caused by nonlinear projection and limited pattern control. The approach models artifacts along projector rays, estimates the projector pinhole from a single-directional hyperbolic fringe pattern to recover geometry without stereo calibration, and refines with a single calibration pose; experiments report significant accuracy gains.

Why it matters

Proposes a ray-based phase-error correction framework for miniaturized DOE projector-based Fringe Projection Profilometry (FPP) that models phase artifacts along projection rays from the projector pinhole, avoiding image-domain or neighboring-pixel processing.

Key details

  • Introduces a projector-pinhole estimation method using a single-directional hyperbolic fringe pattern to recover projector geometry without stereo calibration, and a data-efficient refinement built from a single calibration pose.
  • Authors Seung-Jae Son, Yatong An, and Jae-Sang Hyun (preprint 2026-07-16) report experiments showing significant improvements in reconstruction accuracy under nonlinear projection conditions for miniaturized DOE projector FPP systems.
Source evidence

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.