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Occlusion detection in front projection environments based on camera-projector calibration.

机译:基于摄像机-投影仪校准的前投影环境中的遮挡检测。

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摘要

Camera-projector systems are increasingly being used to create large displays for data visualization, immersive environments and augmented reality. Front projection displays, however, suffer from occlusions, resulting in shadows and light being cast, respectively, onto the display and the user. Researchers have begun addressing the issue of occlusion detection to enable dynamic shadow removal and to facilitate automatic user sensing in interactive display applications. A camera-projector system for occlusion detection in front projection environments is presented. The approach is based on offline, camera projector geometric and color calibration, which then enable online, dynamic camera view synthesis of arbitrary projected scenes. Occluded display regions are detected through pixel-wise differencing between predicted and captured camera images. The implemented system is demonstrated for dynamic shadow detection and removal using a dually overlapped projector display.
机译:越来越多地使用摄像机-投影仪系统来创建大型显示器,以进行数据可视化,沉浸式环境和增强现实。然而,前投影显示器遭受遮挡,导致阴影和光分别投射到显示器和用户上。研究人员已开始解决遮挡检测问题,以实现动态阴影去除并促进交互式显示应用程序中的自动用户感测。提出了一种在前投影环境中用于遮挡检测的照相机-投影仪系统。该方法基于离线的相机投影仪几何和颜色校准,然后可以对任意投影场景进行在线的动态相机视图合成。通过预测的和捕获的相机图像之间的像素差异来检测遮挡的显示区域。演示了使用双重叠投影仪显示器进行动态阴影检测和去除的系统。

著录项

  • 作者

    Hilario, Maria Nadia.;

  • 作者单位

    McGill University (Canada).;

  • 授予单位 McGill University (Canada).;
  • 学科 Computer Science.
  • 学位 M.Eng.
  • 年度 2005
  • 页码 76 p.
  • 总页数 76
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

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