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Paper Abstract and Keywords
Presentation 2008-05-30 14:30
Implementation and Evaluation of A Reaction-Diffusion based Coding Rate Control Mechanism for Camera Sensor Networks
Hiroshi Yamamoto, Katsuya Hyodo, Naoki Wakamiya, Masayuki Murata (Osaka Univ.) IN2008-6
Abstract (in Japanese) (See Japanese page) 
(in English) Due to the limitation of wireless communication capacity, a camera sensor network will be easily congested and the perceived video quality considerably deteriorates, when all nodes generate and transmit high-quality video data. To tackle this problem, taking into account that not all video data are equally important from a viewpoint of surveillance or observation applications, our research group proposes an autonomous control mechanism, where each node appropriately determines its video coding rate according to the location and velocity of targets without any centralized control. In this paper, we implemented the mechanism and conducted practical experiments. We verified that the video coding rate was appropriately adjusted and the loss of packets was suppressed. Consequently, the perceived video quality was higher than the cases where the lowest coding rate was always used to avoid congestion and the highest coding rate was always used intending the high quality video.
Keyword (in Japanese) (See Japanese page) 
(in English) Camera Sensor Network / Coding Rate Control / Reaction-Diffusion Model / Experiment / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 60, IN2008-6, pp. 31-36, May 2008.
Paper # IN2008-6 
Date of Issue 2008-05-22 (IN) 
ISSN Print edition: ISSN 0913-5685    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 IN2008-6

Conference Information
Committee IN RCS  
Conference Date 2008-05-29 - 2008-05-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Network, Adhoc Network, PAN, Sensor Network, RFID, etc. 
Paper Information
Registration To IN 
Conference Code 2008-05-IN-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Implementation and Evaluation of A Reaction-Diffusion based Coding Rate Control Mechanism for Camera Sensor Networks 
Sub Title (in English)  
Keyword(1) Camera Sensor Network  
Keyword(2) Coding Rate Control  
Keyword(3) Reaction-Diffusion Model  
Keyword(4) Experiment  
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Keyword(6)  
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1st Author's Name Hiroshi Yamamoto  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Katsuya Hyodo  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Naoki Wakamiya  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Masayuki Murata  
4th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2008-05-30 14:30:00 
Presentation Time 25 minutes 
Registration for IN 
Paper # IN2008-6 
Volume (vol) vol.108 
Number (no) no.60 
Page pp.31-36 
#Pages 6 
Date of Issue 2008-05-22 (IN) 

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