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Paper Abstract and Keywords
Presentation 2026-03-06 10:21
Towards Lung Lobe Segmentation for Unseen Thoracoscopic Surgery Videos Using U-Net and SAM2
Misaki Hidaka (Kyoto Univ.), Yuka Kadomatsu, Harushi Ueno, Toyofumi Yoshikawa (Nagoya Univ.), Megumi Nakao (Kyoto Univ.) MI2025-93
Abstract (in Japanese) (See Japanese page) 
(in English) Organs in surgical videos exhibit similar visual features, leading to misrecognition when the field of view changes, even within the same case. To address this issue, we propose a model that combines U-Net and SAM2. By generating prompts from U2-Net predictions and feeding them into SAM2, it achieved automatic lobe-level recognition in unseen scenes. We also investigate how prompt updating based on SAM2 predictions affects recognition accuracy.
Keyword (in Japanese) (See Japanese page) 
(in English) intraoperative anatomical understanding / cooperative segmentation / autonomous prompt generation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 395, MI2025-93, pp. 123-126, March 2026.
Paper # MI2025-93 
Date of Issue 2026-02-26 (MI) 
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 MI2025-93

Conference Information
Committee MI  
Conference Date 2026-03-05 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) OKINAWAKEN SEINENKAIKAN 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Medical Imaging, etc. 
Paper Information
Registration To MI 
Conference Code 2026-03-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Towards Lung Lobe Segmentation for Unseen Thoracoscopic Surgery Videos Using U-Net and SAM2 
Sub Title (in English)  
Keyword(1) intraoperative anatomical understanding  
Keyword(2) cooperative segmentation  
Keyword(3) autonomous prompt generation  
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1st Author's Name Misaki Hidaka  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Yuka Kadomatsu  
2nd Author's Affiliation Nagoya University (Nagoya Univ.)
3rd Author's Name Harushi Ueno  
3rd Author's Affiliation Nagoya University (Nagoya Univ.)
4th Author's Name Toyofumi Yoshikawa  
4th Author's Affiliation Nagoya University (Nagoya Univ.)
5th Author's Name Megumi Nakao  
5th Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2026-03-06 10:21:00 
Presentation Time 13 minutes 
Registration for MI 
Paper # MI2025-93 
Volume (vol) vol.125 
Number (no) no.395 
Page pp.123-126 
#Pages 4 
Date of Issue 2026-02-26 (MI) 

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