发表机构
Department of Mechanical Engineering, Yonsei University; Meta Reality Labs（延世大学机械工程系; Meta现实实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对相移轮廓术在眼部重建中因眼旋转产生的误差问题，提出基于特定用户三维眼模型估计眼旋转，补偿相机像素失配和相移误差，并引入区域优化策略，实验证明可提高重建精度，为高精度眼动追踪奠定基础。
AI 中文摘要
随着虚拟现实和增强现实中沉浸式头戴式显示器的普及，可靠且高精度的眼动追踪变得愈发重要。传统基于二维图像的方法系统复杂度低，但稳定性、准确性和鲁棒性有限。三维眼表重建能提供更丰富几何信息，结构光轮廓术很有吸引力。然而，相移轮廓术在帧间眼睛旋转时极易受运动诱导误差影响。本研究提出基于相移轮廓术的动态三维眼部重建旋转运动补偿框架。利用特定用户三维眼模型从基于图像的运动线索估计相对眼旋转，用于补偿帧间旋转引起的相机像素失配和相移误差。还引入区域优化策略减少残余伪影。实验表明该方法显著抑制运动诱导变形并提高重建精度，且补偿原理不限于球形眼几何形状，为沉浸式环境中未来高精度眼动追踪的稳定基于相移轮廓术的动态三维眼部重建奠定了实践基础。
英文摘要
With the proliferation of immersive Head-Mounted Displays (HMDs) for Virtual and Augmented Reality (VR/AR), reliable and high-precision eye tracking has become increasingly important. Conventional 2D image-based methods offer low system complexity but remain limited in stability, accuracy, and robustness. Three-dimensional ocular surface reconstruction can provide richer geomet-ric information, and structured light profilometry is particularly attractive because it enables dense and accurate surface measurement. However, Phase-Shifting Profilometry (PSP), which estimates phase from sequentially acquired fringe images, is highly susceptible to motion-induced errors when the eye rotates between frames. This study proposes a rotational motion compensation framework for PSP-based dynamic 3D eye reconstruction. Relative eye rotation is estimated from image-based motion cues using a user-specific 3D eye model in a spherical-coordinate domain. The estimated motion is then used to compensate for camera-pixel mismatch and phase-shift errors caused by inter-frame rotation. A region-wise optimization strategy is further introduced to reduce residual artifacts by inde-pendently refining the compensation strength in different ocular regions. Experiments with a rotating fake eye under non-uniform motion demonstrate that the proposed method substantially suppresses motion-induced deformation and improves reconstruction accuracy. An additional experiment with a non-spherical rigid object indicates that the compensation principle is not restricted to spherical eye geometry. These results establish a practical basis for stable PSP-based dynamic 3D eye reconstruction toward future high-precision eye tracking in immersive environments.
