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Hue-based feature detection for geometry calibration of multiprojector arrays

机译：基于色相的特征检测，用于多投影仪阵列的几何校准

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摘要

A feature detection method for calibrating multiprojector displays that utilizes a chromatic pattern to avoid the disadvantages of black-and-white features is proposed. Theoretical and experimental analyses implied that our hue-based method was robust to four factors: the ambient light, the non-Lambertian reflection of a display wall, the variation of projectors, and the different positions of cameras. Our method resulted in low rates of misdetection or false detection. Experimental results also indicated that our method was effective to detect weak features. A markerless calibration method was proposed to autoestimate the aspect ratio of the planar display wall and to autocalibrate multiprojectors. Subpixel accuracy was achieved by applying the detected features in the process of geometry calibration of multiprojector displays with embedded processors and cameras.
机译：提出了一种用于校准多投影仪显示器的特征检测方法，该方法利用彩色图案来避免黑白特征的缺点。理论和实验分析表明，我们基于色相的方法对四个因素具有鲁棒性：环境光，显示墙的非朗伯反射，投影仪的变化以及相机的不同位置。我们的方法导致误检或误检率较低。实验结果还表明，我们的方法可以有效地检测弱点。提出了一种无标记的校准方法来自动估计平面显示墙的长宽比并自动校准多投影仪。通过在具有嵌入式处理器和照相机的多投影仪显示器的几何校准过程中应用检测到的特征，可以实现亚像素精度。

著录项

  • 来源
    《Optical engineering》 |2014年第6期|063108.1-063108.15|共15页
  • 作者

    Jin Yan; Guanghong Gong; Chao Tian;

  • 作者单位

    Beihang University, School of Automation Science and Electrical Engineering, No. 37, Xueyuan Road, Haidian District, Beijing 100191, China;

    Beihang University, School of Automation Science and Electrical Engineering, No. 37, Xueyuan Road, Haidian District, Beijing 100191, China;

    Beihang University, School of Automation Science and Electrical Engineering, No. 37, Xueyuan Road, Haidian District, Beijing 100191, China;

  • 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

    large-format displays; geometry calibration; feature detection; hue component; binarization;

    机译：大幅面显示器;几何校准特征检测;色相成分;二值化;

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