• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Behavior Research Methods, Instruments & Computers >Tracking the line of primary gaze in a walking simulator: Modeling and calibration
【24h】

Tracking the line of primary gaze in a walking simulator: Modeling and calibration

机译：在步行模拟器中跟踪主视线：建模和校准

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This article describes a system for tracking the line of primary gaze (LoPG) of participants as they view a large projection screen. Using a magnetic head tracker and a tracking algorithm, we find the onscreen location at which a participant is pointing a head-mounted crosshair. The algorithm presented for tracking the LoPG uses a polynomial function to correct for distortion in magnetic tracker readings, a geometric model for computing LoPG from corrected tracker measurements, and a method for finding the intersection of the LoPG with the screen. Calibration techniques for the above methods are presented. The results of two experiments validating the algorithm and calibration methods are also reported. Experiments showed an improvement in accuracy of LoPG tracking provided by each of the two presented calibration steps, yielding errors in LoPG measurements of less than 2° over a wide range of head positions. Source code for the described algorithms can be downloaded from the Psychonomic Society Web archive, http://www.psychonomic.org/archive/.
机译：本文介绍了一种用于在参与者查看大投影屏时跟踪其主要注视（LoPG）线的系统。使用磁头跟踪器和跟踪算法，我们可以找到参与者指向头戴式十字准线的屏幕位置。提出的用于跟踪LoPG的算法使用多项式函数来校正磁性跟踪器读数​​中的失真，用于从校正后的跟踪器测量值计算LoPG的几何模型以及用于查找LoPG与屏幕的交集的方法。介绍了上述方法的校准技术。还报告了验证算法和校准方法的两个实验的结果。实验表明，通过两个提出的校准步骤中的每一个步骤，LoPG跟踪的准确性都有所提高，在很大的头部位置范围内，LoPG测量的误差均小于2°。可以从Psychonomic Society Web存档http://www.psychonomic.org/archive/中下载所描述算法的源代码。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号