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Paper Abstract and Keywords
Presentation 2008-03-12 13:30
Image Processing by using the EM algorithm and the belief propagation
Kei Inoue, Muneki Yasuda, Kazuyuki Tanaka (Tohoku Univ.) NC2007-118
Abstract (in Japanese) (See Japanese page) 
(in English) Markov random fields in image processing includehyperparameters to estimate from given data. We introduce a method to estimate hyperparameters by combining EM algorithm with belief propagation which is familiar computational method in the statistical learning theory. The prior probabilistic model is assumed to be the $Q$-Ising model and we adopt the symmetric channel and the additive white Gaussian noise as degradation process. In the method, the belief propagation procedures are stopped in a finite number of iterations. We check the influence of these hyperparameter estimations. The obtained results show that the deference between the performance of our proposed method and the one of the conventional EM algorithm with belief propagation is very small even in the case where the number of iterations in the belief propagation is restricted to one.
Keyword (in Japanese) (See Japanese page) 
(in English) Probabilistic information processing / Statistical learning / Markov random field / EM algorithm / Belief propagation / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 542, NC2007-118, pp. 37-42, March 2008.
Paper # NC2007-118 
Date of Issue 2008-03-05 (NC) 
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 NC2007-118

Conference Information
Committee NC MBE  
Conference Date 2008-03-12 - 2008-03-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NC 
Conference Code 2008-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Image Processing by using the EM algorithm and the belief propagation 
Sub Title (in English)  
Keyword(1) Probabilistic information processing  
Keyword(2) Statistical learning  
Keyword(3) Markov random field  
Keyword(4) EM algorithm  
Keyword(5) Belief propagation  
Keyword(6)  
Keyword(7)  
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1st Author's Name Kei Inoue  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Muneki Yasuda  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Kazuyuki Tanaka  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2008-03-12 13:30:00 
Presentation Time 20 minutes 
Registration for NC 
Paper # NC2007-118 
Volume (vol) vol.107 
Number (no) no.542 
Page pp.37-42 
#Pages 6 
Date of Issue 2008-03-05 (NC) 

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