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Paper Abstract and Keywords
Presentation 2026-03-06 11:50
Non-Line-of-Sight Imaging Using Electromagnetic Leakage Emitted During Non-Orthogonal Image Projection
Masaya Oishi (Chiba Univ.), Taiki Kitazawa, Yuichi Hayashi (NAIST), Hiroyuki Kubo (Chiba Univ.) VLD2025-105 HWS2025-101 ICD2025-116
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, information leakage caused by unintended electromagnetic emissions from electronic devices, known as TEMPEST, has become a serious security concern. This study focuses on electromagnetic emissions generated during non-orthogonal image projection and demonstrates a non-line-of-sight (NLoS) imaging method that reconstructs objects located in regions that are not directly observable. By analyzing the leaked electromagnetic signals to estimate the projected illumination patterns, the proposed approach enables the reconstruction of hidden scenes without direct optical observation. This paper shows that leaked electromagnetic emissions can be utilized not merely as a source of information leakage from devices, but also as a signal source for visualizing the physical environment surrounding electronic equipment.
Keyword (in Japanese) (See Japanese page) 
(in English) Light Transport / Non-Line-of-Sight (NLoS) Imaging / TEMPEST / Singular Value Decomposition (SVD) / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 383, HWS2025-101, pp. 163-168, March 2026.
Paper # HWS2025-101 
Date of Issue 2026-02-25 (VLD, HWS, ICD) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF VLD2025-105 HWS2025-101 ICD2025-116

Conference Information
Committee ICD HWS VLD  
Conference Date 2026-03-04 - 2026-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To HWS 
Conference Code 2026-03-ICD-HWS-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non-Line-of-Sight Imaging Using Electromagnetic Leakage Emitted During Non-Orthogonal Image Projection 
Sub Title (in English)  
Keyword(1) Light Transport  
Keyword(2) Non-Line-of-Sight (NLoS) Imaging  
Keyword(3) TEMPEST  
Keyword(4) Singular Value Decomposition (SVD)  
Keyword(5)  
Keyword(6)  
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1st Author's Name Masaya Oishi  
1st Author's Affiliation Chiba University (Chiba Univ.)
2nd Author's Name Taiki Kitazawa  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Yuichi Hayashi  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
4th Author's Name Hiroyuki Kubo  
4th Author's Affiliation Chiba University (Chiba Univ.)
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Speaker Author-1 
Date Time 2026-03-06 11:50:00 
Presentation Time 25 minutes 
Registration for HWS 
Paper # VLD2025-105, HWS2025-101, ICD2025-116 
Volume (vol) vol.125 
Number (no) no.382(VLD), no.383(HWS), no.384(ICD) 
Page pp.163-168 
#Pages 6 
Date of Issue 2026-02-25 (VLD, HWS, ICD) 

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