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Paper Abstract and Keywords
Presentation 2016-08-09 10:00
Technique Using Near-Infrared Imaging for Reading Information Embedded Into Objects Fabricated With 3-D Printers
Masahiro Suzuki, Kousuke Nakamura, Keigo Takazawa (Kanagawa Inst. Tech.), Youichi Takashima (NTT), Hideyuki Torii, Kazutake Uehira (Kanagawa Inst. Tech.)
Abstract (in Japanese) (See Japanese page) 
(in English) We evaluated our previously proposed technique of protecting copyrights of digital data for 3-D printing. The proposed technique embeds copyright information into not only digital data but also objects fabricated from the data by constructing their inside with fine structure. The proposed technique also nondestructively reads the information embedded inside the objects to confirm illegal acts such as bootleg products. We had evaluated the proposed technique by examining nondestructive reading using near-infrared imaging in our previous studies. However, the experimental results in these studies had only shown that fine structure inside fabricated objects was seen by eyesight. Therefore, we examined an algorithm of automatic reading using near-infrared imaging in this study. The test sample used in this study was an object fabricated with low infill density. Embedded information was expressed by constructing protuberances with inner walls, and arrays of the protuberances were surrounded by the structure similar to walls. Near-infrared images of the test sample were analyzed by using the structure surrounding the arrays as a reference to calculate weighted means for shading compensation. The experimental results indicated that the embedded information was correctly recognized, and we demonstrated the feasibility of automatic reading using near-infrared imaging.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital Fabrication / 3-D Printing / 3-D Printer / Copyright / Additive Manufacturing / / /  
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Conference Information
Committee ME CE IPSJ-AVM IEICE-IE  
Conference Date 2016-08-08 - 2016-08-09 
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Paper Information
Registration To IEICE-IE 
Conference Code 2016-08-IE-ME-AVM-CE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Technique Using Near-Infrared Imaging for Reading Information Embedded Into Objects Fabricated With 3-D Printers 
Sub Title (in English)  
Keyword(1) Digital Fabrication  
Keyword(2) 3-D Printing  
Keyword(3) 3-D Printer  
Keyword(4) Copyright  
Keyword(5) Additive Manufacturing  
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1st Author's Name Masahiro Suzuki  
1st Author's Affiliation Kanagawa Institute of Technology (Kanagawa Inst. Tech.)
2nd Author's Name Kousuke Nakamura  
2nd Author's Affiliation Kanagawa Institute of Technology (Kanagawa Inst. Tech.)
3rd Author's Name Keigo Takazawa  
3rd Author's Affiliation Kanagawa Institute of Technology (Kanagawa Inst. Tech.)
4th Author's Name Youichi Takashima  
4th Author's Affiliation NTT Service Evolution Laboratories (NTT)
5th Author's Name Hideyuki Torii  
5th Author's Affiliation Kanagawa Institute of Technology (Kanagawa Inst. Tech.)
6th Author's Name Kazutake Uehira  
6th Author's Affiliation Kanagawa Institute of Technology (Kanagawa Inst. Tech.)
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Speaker Author-1 
Date Time 2016-08-09 10:00:00 
Presentation Time 30 minutes 
Registration for IEICE-IE 
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Volume (vol) vol.40 
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