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Paper Abstract and Keywords
Presentation 2026-05-21 14:15
[Technology Exhibit] Non-Perfusion Area Segmentation from an OCTA Image
Weiwei Du, Nao Yanagihara (Kyoto Inst. of Tech.), Masahiro Miyake (Kyoto Univ.) IMQ2026-2
Abstract (in Japanese) (See Japanese page) 
(in English) Optical Coherence Tomography Angiography (OCTA) is a non-invasive imaging technique that enables visualization of intraocular blood flow, allowing simultaneous assessment of vascular structures and hemodynamic information. In particular, OCTA is capable of depicting microvasculature at the capillary level with high resolution. However, accurate
extraction of Non-Perfusion Areas (NPAs), which are caused by capillary occlusion and dropout, remains challenging due to the influence of image noise. In this study, we introduce the Comparative Constraint Model (CCModel) proposed by Xue et al.
[5] to achieve robust and accurate NPA extraction while reducing noise effects. Furthermore, in addition to conventional area-based evaluation metrics, Receiver Operating Characteristic (ROC) analysis is applied to establish a novel evaluation
framework for NPA assessment.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical Coherence Tomography Angiography / Non-perfusion Area / Comparative Constraint Model / Receiver Operating Characteristic / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 31, IMQ2026-2, pp. 7-10, May 2026.
Paper # IMQ2026-2 
Date of Issue 2026-05-14 (IMQ) 
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 IMQ2026-2

Conference Information
Committee IMQ  
Conference Date 2026-05-21 - 2026-05-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Image Media Qualitym etc. 
Paper Information
Registration To IMQ 
Conference Code 2026-05-IMQ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non-Perfusion Area Segmentation from an OCTA Image 
Sub Title (in English)  
Keyword(1) Optical Coherence Tomography Angiography  
Keyword(2) Non-perfusion Area  
Keyword(3) Comparative Constraint Model  
Keyword(4) Receiver Operating Characteristic  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Weiwei Du  
1st Author's Affiliation Kyoto Insititute of Technology (Kyoto Inst. of Tech.)
2nd Author's Name Nao Yanagihara  
2nd Author's Affiliation Kyoto Insititute of Technology (Kyoto Inst. of Tech.)
3rd Author's Name Masahiro Miyake  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2026-05-21 14:15:00 
Presentation Time 25 minutes 
Registration for IMQ 
Paper # IMQ2026-2 
Volume (vol) vol.126 
Number (no) no.31 
Page pp.7-10 
#Pages 4 
Date of Issue 2026-05-14 (IMQ) 

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