基于光线的微型 DOE 投影仪的 FPP 在单向双曲投影下的相位误差校正
Ray-based phase error correction for miniaturized DOE projector-based FPP under single-directional hyperbolic projection
- School of Mechanical Engineering Yonsei University（延世大学机械工程学院）
- Meta Reality Labs（Meta 现实实验室）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
针对微型 DOE投影仪的FPP系统相位伪影问题，提出基于光线的相位误差校正框架，引入基于单向双曲条纹图案的针孔估计方法及数据高效策略，实验证明该方法能显著提高非线性投影条件下的重建精度。
AI中文摘要：
使用微型 DOE 投影仪的条纹投影轮廓测量（FPP）系统，常因非线性投影特性和有限的图案可控性而遭受严重的相位伪影。我们提出了一种基于光线的相位误差校正框架，该框架沿着从投影仪针孔发出的投影光线对相位伪影进行建模，纳入投影仪几何结构，无需依赖图像域处理或相邻像素。引入了一种基于单向双曲条纹图案的投影仪针孔估计方法，无需立体校准即可恢复投影仪几何结构。此外，一种数据高效策略从单个校准姿态构建细化模型。在基于微型 DOE 投影仪的 FPP 系统上的实验表明，在非线性投影条件下重建精度有显著提高，证实了所提方法的稳健性和物理一致性。
英文摘要：
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.
