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Paper Abstract and Keywords
Presentation 2024-07-12 14:30
Relative Position Estimation Using Cross Filter for Rolling-Shutter Cameras
Daisuke Sekimoto, Koji Kamakura, Masayuki Kinoshita (CIT), Takaya Yamazato (Nagoya Univ.) CS2024-36
Abstract (in Japanese) (See Japanese page) 
(in English) We propose an estimation method of light emitting diode(LED) position with a cross filter (CF) for rolling-shutter (RS) camera. The CF is set in front of the camera lens so that incident light can be scattered into two straight lines extending $pmpi/4$ from the horizontal row of the CMOS image sensor (IS). With the geometry of a right-angled isosceles triangle, our method makes it possible to estimate the coordinates of the LED in the IS plane when the scattered light is captured at two points in a scanline. When the rows detecting scattered light at two points increases, the estimable rows also increases, and the estimated coordinates can be updated during reading of a frame. Furthermore, our method makes it possible rows by rows when multiple LEDs are used or when they are moving. Without the CF, estimation is done only once per frame when thescan of the sequentially activated operation of the RS camera reaches a row that has just captured the whole image of the target LED, and the estimated coordinates are not updated in that frame. Our experiments verify that our estimation method works with the estimation error less than $4$,pixels, and to extend the region of a frame in which estimated coordinates are output, even in a moving environment, while the conventional method (without CF) obtains the estimated coordinates only once when the scan reaches a row that captures entire LED.
Keyword (in Japanese) (See Japanese page) 
(in English) Visible Light Positioning / Position Location / Visible Light Communication / Optical Camera Communication / Cross Filter / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 100, CS2024-36, pp. 131-136, July 2024.
Paper # CS2024-36 
Date of Issue 2024-07-04 (CS) 
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 CS2024-36

Conference Information
Committee CS  
Conference Date 2024-07-11 - 2024-07-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Center for Tsushima engagement 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Semantic communications, Access networks, Underwater and underground communications, IoT, Cognitive radio, Coding scheme, etc. 
Paper Information
Registration To CS 
Conference Code 2024-07-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Relative Position Estimation Using Cross Filter for Rolling-Shutter Cameras 
Sub Title (in English)  
Keyword(1) Visible Light Positioning  
Keyword(2) Position Location  
Keyword(3) Visible Light Communication  
Keyword(4) Optical Camera Communication  
Keyword(5) Cross Filter  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Daisuke Sekimoto  
1st Author's Affiliation Chiba Institute of Technology (CIT)
2nd Author's Name Koji Kamakura  
2nd Author's Affiliation Chiba Institute of Technology (CIT)
3rd Author's Name Masayuki Kinoshita  
3rd Author's Affiliation Chiba Institute of Technology (CIT)
4th Author's Name Takaya Yamazato  
4th Author's Affiliation Nagoya University (Nagoya Univ.)
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Speaker Author-1 
Date Time 2024-07-12 14:30:00 
Presentation Time 20 minutes 
Registration for CS 
Paper # CS2024-36 
Volume (vol) vol.124 
Number (no) no.100 
Page pp.131-136 
#Pages 6 
Date of Issue 2024-07-04 (CS) 

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