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Paper Abstract and Keywords
Presentation 2008-05-23 12:30
Shaka: Method for Estimating User Movement Using Mobile Phone
Arei Kobayashi, Takeshi Iwamoto, Satoshi Nishiyama (KDDILABS) MoMuC2008-20
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents a method for estimating the movement of a user using a system that combines GPS, a microphone and an acceleration sensor able to be fitted in a mobile phone. Past attempts to provide a means to identify movement associated with riding on a bicycle, train, bus or car, in addition to common human movements like standing still, walking or running, have had problems with poor accuracy due to factors such as sudden changes in vibration or times when the vibrations resembled those for other types of movement. The proposed method aims to avoid these problems by treating time-axis changes in the data from each sensor as state transitions, and by combining different techniques for identifying each type of movement. Performance test results show that the method achieves 80% or better accuracy for all seven of the different types of movement mentioned above.
Keyword (in Japanese) (See Japanese page) 
(in English) Shaka / User Movement / acceleration sensor / Microphone / GPS / / /  
Reference Info. IEICE Tech. Rep., vol. 108, May 2008.
Paper #  
Date of Issue 2008-05-15 (MoMuC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 MoMuC2008-20

Conference Information
Committee MoNA IPSJ-MBL  
Conference Date 2008-05-22 - 2008-05-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-seinen-kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile computing, Mobile application, Ubiquitous communication, Mobile multimedia communication 
Paper Information
Registration To MoNA 
Conference Code 2008-05-MoMuC-MBL 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Shaka: Method for Estimating User Movement Using Mobile Phone 
Sub Title (in English)  
Keyword(1) Shaka  
Keyword(2) User Movement  
Keyword(3) acceleration sensor  
Keyword(4) Microphone  
Keyword(5) GPS  
1st Author's Name Arei Kobayashi  
1st Author's Affiliation KDDI R&D Laboratories Inc. (KDDILABS)
2nd Author's Name Takeshi Iwamoto  
2nd Author's Affiliation KDDI R&D Laboratories Inc. (KDDILABS)
3rd Author's Name Satoshi Nishiyama  
3rd Author's Affiliation KDDI R&D Laboratories Inc. (KDDILABS)
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Date Time 2008-05-23 12:30:00 
Presentation Time 25 
Registration for MoNA 
Paper # IEICE-MoMuC2008-20 
Volume (vol) IEICE-108 
Number (no) no.44 
Page pp.115-120 
#Pages IEICE-6 
Date of Issue IEICE-MoMuC-2008-05-15 

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