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首页> 外文期刊>Journal of Imaging Science and Technology >Decoupling of Real and Digital Content in Projection-based Augmented Reality Systems Using Time Multiplexed Image Capture
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Decoupling of Real and Digital Content in Projection-based Augmented Reality Systems Using Time Multiplexed Image Capture

机译：使用时分多路复用图像捕获的基于投影的增强现实系统中的真实和数字内容解耦

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摘要

Projection-based augmented reality systems overlay digital information directly on real objects, while at the same time use cameras to capture the scene information. A common problem with such systems is that cameras see the projected image besides the real objects to some degree. This crosstalk reduces the object detection and digital content registration abilities. The authors propose a novel time sharing-based technique that facilitates the real and digital content decoupling in real time without crosstalk. The proposed technique is based on time sequential operation between a MEMS scanner-based mobile projector and rolling shutter image sensor. A MEMS mirror-based projector scans light beam in raster pattern pixel by pixel and completes full frame projection over a refresh period, while a rolling shutter image sensor sequentially collects scene light row by row. In the proposed technique, the image sensor is synchronized with scanning MEMS mirror and precisely follows the display scanner with a half-period lag to make the displayed content completely invisible for camera. An experimental setup consisting of laser pico projector, an image sensor, and a delay and amplifier circuit is developed. The performance of proposed technique is evaluated by measuring the crosstalk in captured content and sensor exposure limit. The results show 0% crosstalk in captured content up to 8 ms sensor exposure. High capture frame rate (up to 45 fps) is achieved by cyclically triggering a 3.2 MP, 60 fps CMOS sensor and using a 60 Hz pico projector. (C) 2017 Society for Imaging Science and Technology.
机译：基于投影的增强现实系统将数字信息直接叠加在真实对象上，同时使用摄像头捕获场景信息。这种系统的一个普遍问题是，摄像机在一定程度上可以看到除了真实物体之外的投影图像。这种串扰会降低对象检测和数字内容注册的能力。作者提出了一种新颖的基于时间共享的技术，该技术可实现实时的实时数字内容解耦，而不会产生串扰。所提出的技术基于基于MEMS扫描仪的移动投影仪和卷帘式图像传感器之间的时序操作。基于MEMS镜的投影仪逐像素扫描光栅图形中的光束，并在刷新周期内完成全帧投影，而滚动快门图像传感器逐行依次收集场景光。在提出的技术中，图像传感器与扫描MEMS镜同步，并以半周期滞后精确跟随显示扫描仪，以使显示的内容对于相机完全不可见。开发了由激光微型投影仪，图像传感器以及延迟和放大电路组成的实验装置。通过测量捕获的内容和传感器暴露极限中的串扰来评估所提出技术的性能。结果表明，长达8 ms的传感器曝光，捕获的内容中的串扰为0％。通过循环触发3.2 MP，60 fps CMOS传感器并使用60 Hz微型投影仪，可以实现高捕获帧速率（最高45 fps）。 （C）2017年影像科学与技术学会。

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  • 来源
    《Journal of Imaging Science and Technology》 |2017年第1期|010406.1-010406.6|共6页
  • 作者

    Soomro Shoaib R.; Ulusoy Erdem; Urey Hakan;

  • 作者单位

    Koc Univ, Dept Elect Engn, Opt Microsys Lab, TR-34450 Istanbul, Turkey;

    Koc Univ, Dept Elect Engn, Opt Microsys Lab, TR-34450 Istanbul, Turkey;

    Koc Univ, Dept Elect Engn, Opt Microsys Lab, TR-34450 Istanbul, Turkey;

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