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首页> 外文期刊>Optical engineering >Affine registration of three-dimensional point sets for improving the accuracy of eye position trackers
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Affine registration of three-dimensional point sets for improving the accuracy of eye position trackers

机译：三维点集的仿射配准，以提高眼睛位置跟踪器的准确性

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摘要

Existing methods for tracking three-dimensional (3-D) eye positions with a monocular color camera mostly rely on a generic 3-D face model and a certain face database. However, the performance of these methods is susceptible to the variations of head poses. For this reason, existing methods for estimating 3-D eye position from a single two-dimensional face image may yield erroneous results. To improve the accuracy of 3-D eye position trackers using a monocular camera, we present a compensation method as a postprocessing technique. We address the problem of determining an optimal registration function for fitting 3-D data consisting of the inaccurate estimates from the eye position tracker and their corresponding ground truths. To obtain the ground truths of 3-D eye positions, we propose two different systems by combining an optical motion capture system and checkerboards, which construct the form of the hand-eye and robot-world calibration. By solving a least-squares optimization problem, we can determine the optimal registration function in an affine form. Real experiments demonstrate that the proposed method can considerably improve the accuracy of 3-D eye position trackers using a single color camera.
机译：现有的用单眼彩色相机跟踪三维（3-D）眼睛位置的方法主要依靠通用的3-D面部模型和特定的面部数据库。但是，这些方法的性能容易受到头部姿势变化的影响。为此，从单个二维面部图像估计3-D眼睛位置的现有方法可能会产生错误的结果。为了提高使用单眼相机的3D眼睛位置跟踪器的准确性，我们提出了一种补偿方法作为后处理技术。我们解决了确定适合3D数据的最佳配准函数的问题，该3D数据由来自眼睛位置跟踪器的不正确估计及其相应的地面真实情况组成。为了获得3-D眼睛位置的真实情况，我们通过结合光学运动捕获系统和棋盘格来提出两种不同的系统，它们构成了手眼和机器人世界校准的形式。通过解决最小二乘优化问题，我们可以仿射形式确定最优配准函数。实际实验表明，所提出的方法可以大大提高使用单色相机的3D眼睛位置跟踪器的准确性。

著录项

  • 来源
    《Optical engineering》 |2017年第4期|043105.1-043105.10|共10页
  • 作者

    Donghoon Kang; Jinwook Kim; Sung-Kyu Kim;

  • 作者单位

    Korea Institute of Science and Technology (KIST), Imaging Media Research Center, Seoul, Republic of Korea;

    Korea Institute of Science and Technology (KIST), Imaging Media Research Center, Seoul, Republic of Korea;

    Korea Institute of Science and Technology (KIST), Imaging Media Research Center, Seoul, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    monocular camera; eye positions; hand-eye and robot-world calibration; affine registration;

    机译：单眼相机眼位手眼和机器人世界校准;仿射注册;

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