PILC Projector: Image Projection With Pixel-Level Infrared Light Communication
PILC Projector: Image Projection With Pixel-Level Infrared Light Communication
复制标题
PILC 投影仪：具有像素级红外光通信的图像投影
DOI：
10.1109/access.2019.2950068
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Naemura Takeshi
中科院分区：
文献类型：
--
作者：
Kamei Ikuo;Hiraki Takefumi;Fukushima Shogo;Naemura Takeshi
投影仪与投影平面上的多个设备之间的不可见光通信使得能够实现人机交互应用，诸如可移动显示器和指向设备。在本文中，我们提出了一个像素级的红外光通信（PILC）的投影仪，可以项目丰富的，不可见的位置依赖的高对比度，全彩色可见光图像的信息。虽然以前的这种通信方法牺牲了图像质量，信息量或其他功能，但我们的方法通过将红外光源添加到全色DLP投影机来满足所有要求。该系统分别用可见光和红外光交替地投影可见图像和不可见数据序列。作为概念验证，我们构建了一个功能原型，并证实其图像对比度是以前方法的60倍以上，同时保持像素级位置精度。此外，我们调查了闪烁感知率，以响应不同数量的嵌入信息，并发现我们可以发送丰富的信息（高达约2 kbps）与难以察觉的闪烁。最后，我们建立了一个桌面应用程序与建议的系统，在该系统中，用户可以同时看到航空照片和地图通过可移动的显示器。
Invisible-light communication between a projector and multiple devices on the projection plane enables human-computer interaction applications such as movable displays and pointing devices. In this paper, we propose a pixel-level infrared light communication (PILC) projector that can project rich, invisible position-dependent information on high-contrast, full-color visible images. Although previous methods for such communication sacrificed the image quality, the amount of information, or other features, our method meets all the requirements by adding an infrared light source to a full-color DLP projector. This system alternately projects visible images and invisible data sequences with visible and infrared light, respectively. As proof of concept, we built a functional prototype and confirmed that its image contrast is more than 60 times that of a previous method while maintaining pixel-level position accuracy. In addition, we investigated flicker-perception rates in response to different amounts of embedded information and discovered that we could send rich information (up to approximately 2 kbps) with imperceptible flicker. Finally, we built a tabletop application with the proposed system, in which users can simultaneously see both an aerial photograph and a map through movable displays.