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Paper Abstract and Keywords
Presentation 2026-07-14 09:15
A Method for Adversarial Attacks against Instance Segmentation Models Equipped on Physical Devices
Shota Tokiwagi, Yuya Okadome, Kazuaki Nakamura (Tokyo Univ. of Science) ISEC2026-29 SITE2026-25 BioX2026-52 HWS2026-25 ICSS2026-44 EMM2026-36
Abstract (in Japanese) (See Japanese page) 
(in English) Physical devices such as food-serving robots, which have become widespread in recent years, commonly incorporate instance segmentation models. However, the robustness of these models against patch-based physical adversarial attacks has not been sufficiently investigated. In this study, we propose a method of adversarial patch attack targeting instance segmentation models. Since the appearance of a physically printed patch varies with shooting and lighting conditions, we apply a data augmentation technique called ``Expectation over Transformations'' that simulates these variations when optimizing the adversarial patch. This enhances the feasibility of the attack in the physical world. We evaluated the attack performance of the proposed method through simulation experiments. The experimental results show that overlaying a single patch optimized by the proposed method onto the person region of input images reduces the area under the detection rate curve (AUC) of the ``person'' class by the YOLOv8-seg model by approximately 0.21 on average, demonstrating that the proposed method can serve as an effective adversarial attack against instance segmentation models.
Keyword (in Japanese) (See Japanese page) 
(in English) adversarial attack / adversarial patch / instance segmentation / Expectation over Transformations / YOLOv8 / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 112, EMM2026-36, pp. 117-122, July 2026.
Paper # EMM2026-36 
Date of Issue 2026-07-06 (ISEC, SITE, BioX, HWS, ICSS, EMM) 
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 ISEC2026-29 SITE2026-25 BioX2026-52 HWS2026-25 ICSS2026-44 EMM2026-36

Conference Information
Committee BioX HWS ISEC SITE ICSS EMM IPSJ-CSEC IPSJ-SPT 
Conference Date 2026-07-13 - 2026-07-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Sapporo Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMM 
Conference Code 2026-07-BioX-HWS-ISEC-SITE-ICSS-EMM-CSEC-SPT-SEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Method for Adversarial Attacks against Instance Segmentation Models Equipped on Physical Devices 
Sub Title (in English)  
Keyword(1) adversarial attack  
Keyword(2) adversarial patch  
Keyword(3) instance segmentation  
Keyword(4) Expectation over Transformations  
Keyword(5) YOLOv8  
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1st Author's Name Shota Tokiwagi  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Yuya Okadome  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
3rd Author's Name Kazuaki Nakamura  
3rd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2026-07-14 09:15:00 
Presentation Time 25 minutes 
Registration for EMM 
Paper # ISEC2026-29, SITE2026-25, BioX2026-52, HWS2026-25, ICSS2026-44, EMM2026-36 
Volume (vol) vol.126 
Number (no) no.107(ISEC), no.108(SITE), no.109(BioX), no.110(HWS), no.111(ICSS), no.112(EMM) 
Page pp.117-122 
#Pages 6 
Date of Issue 2026-07-06 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

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