Information hiding inside 3-D printed objects by forming high reflectance projections
Information hiding inside 3-D printed objects by forming high reflectance projections
复制标题
通过形成高反射率投影将信息隐藏在 3D 打印物体内部
DOI：
10.1145/3177404.3177455
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Masahiro Suzuki，Tomohisa Matumoto，Youichi Takashima，Hideyuki Torii，Kazutake Uehira
中科院分区：
文献类型：
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作者：
西出 飛翔;江口 浩二;Masahiro Suzuki，Tomohisa Matumoto，Youichi Takashima，Hideyuki Torii，Kazutake Uehira
本文提出了一种技术，通过在物体外壳内形成对近红外光具有高反射率特性的投影，可以将信息无形地嵌入 3D 打印物体内。该信息通过投影的排列来表达。材料采用聚乳酸树脂。本文还提出了一种技术，可以使用近红外光和相机捕获的物体的反射图像，无损地读取真实物体内部的信息。我们使用峰值波长为 1,550 nm 的光源和灵敏度在 700 至 1,900 nm 范围内的 InGaAs 近红外相机进行了实验，以评估该技术的可行性。我们可以在尺寸超过 2 mm 的捕获图像中看到投影，这些结果表明可以准确读出嵌入的信息，这证实了我们在本文中提出的技术的可行性。
This paper proposes a technique that can embed information invisibly inside 3-D printed objects by forming projections with high reflectance characteristics for near infrared light inside the outer shell of an object. The information is expressed by an arrangement of projections. Polylactic resin is used as the material. This paper also presents a technique that can nondestructively read out information from inside real objects using a reflectance image of the object captured with near infrared light and a camera. We conducted experiments to evaluate the feasibility of this technique by using a light source that emitted light whose peak wavelength was 1,550 nm and an InGaAs near infrared camera that had sensitivity in a range from 700 to 1,900 nm. We could see projections in captured images with sizes over 2 mm and these results demonstrated that the embedded information could accurately be read out, which confirmed the feasibility of the technique we propose in this paper.