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Paper Abstract and Keywords
Presentation 2026-07-15 15:15
Impact of Facial Image's Background on Personal Authentication Using 1kB Compressed Facial Image Stored in 2D Barcode
Kakeru Suzuki, Takahiro Yoshida (TUS) ISEC2026-73 SITE2026-69 BioX2026-96 HWS2026-69 ICSS2026-88 EMM2026-80
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, offline face recognition that stores face images in 2D barcodes has been explored. However, image compression to below 1kB degrades face image quality and recognition accuracy by allocating data to the background. In this study, we apply preprocessing consisting of face trimming and background area removal to the face images in the LFW dataset, and evaluate the impact of background textures on face recognition accuracy. Experimental results using ArcFace and other models showed that face recognition accuracy for 1kB WebP images drops by 13 points due to 1kB compression without the preprocessing. However, preprocessing that replaces the background with black effectively suppresses data allocation to the background area and recovers the accuracy by 7 points, from around 86% to a maximum of around 93%. This confirms that the presence of a background is the main factor in degrading recognition accuracy under 1kB compression.
Keyword (in Japanese) (See Japanese page) 
(in English) Face Recognition / 2D Barcode / Image Compression / Background Removal / High Compression / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 109, BioX2026-96, pp. 430-433, July 2026.
Paper # BioX2026-96 
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 ISEC2026-73 SITE2026-69 BioX2026-96 HWS2026-69 ICSS2026-88 EMM2026-80

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 BioX 
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) Impact of Facial Image's Background on Personal Authentication Using 1kB Compressed Facial Image Stored in 2D Barcode 
Sub Title (in English)  
Keyword(1) Face Recognition  
Keyword(2) 2D Barcode  
Keyword(3) Image Compression  
Keyword(4) Background Removal  
Keyword(5) High Compression  
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1st Author's Name Kakeru Suzuki  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Takahiro Yoshida  
2nd Author's Affiliation Tokyo University of Science (TUS)
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Speaker Author-1 
Date Time 2026-07-15 15:15:00 
Presentation Time 25 minutes 
Registration for BioX 
Paper # ISEC2026-73, SITE2026-69, BioX2026-96, HWS2026-69, ICSS2026-88, EMM2026-80 
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.430-433 
#Pages 4 
Date of Issue 2026-07-06 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

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