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Paper Abstract and Keywords
Presentation 2025-06-18 10:10
Simulation of Bokeh Characteristics of Aerial Images Depending on Floating Distance in Aerial Imaging by Retroreflection
Ryo Sugawara, Naoya Koizumi (UEC) MVE2025-3
Abstract (in Japanese) (See Japanese page) 
(in English) This study aims to enable the design of aerial imaging optical systems based on Aerial Imaging by Retro-Reflection (AIRR) without the need for physical prototyping, by simulating them using a ray-tracing method. The appearance of mid-air images formed by AIRR varies depending on configuration parameters such as the angle of the retroreflector and the floating distance, which influence both brightness and blur. To accurately simulate these appearance variations in computer graphics, a model that accounts for such configuration-dependent effects is required. In this work, we propose a retroreflective model that incorporates both the spread of light on the retroreflector and ray shifts in the outgoing position. Experimental results demonstrate that our method achieves an average improvement of 0.080 in LPIPS compared to conventional models, when evaluated against photographs of real mid-air images.
Keyword (in Japanese) (See Japanese page) 
(in English) Mid-air Image / AIRR / Ray Tracing / BRDF / Diffraction / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 76, MVE2025-3, pp. 13-18, June 2025.
Paper # MVE2025-3 
Date of Issue 2025-06-11 (MVE) 
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)
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Conference Information
Committee MVE IPSJ-HCI IPSJ-EC HI-SIG-DeMO ITE-HI  
Conference Date 2025-06-18 - 2025-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MVE 
Conference Code 2025-06-MVE-HCI-EC-SIG-DeMO-HI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Simulation of Bokeh Characteristics of Aerial Images Depending on Floating Distance in Aerial Imaging by Retroreflection 
Sub Title (in English)  
Keyword(1) Mid-air Image  
Keyword(2) AIRR  
Keyword(3) Ray Tracing  
Keyword(4) BRDF  
Keyword(5) Diffraction  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ryo Sugawara  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Naoya Koizumi  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2025-06-18 10:10:00 
Presentation Time 20 minutes 
Registration for MVE 
Paper # MVE2025-3 
Volume (vol) vol.125 
Number (no) no.76 
Page pp.13-18 
#Pages 6 
Date of Issue 2025-06-11 (MVE) 

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