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Paper Abstract and Keywords
Presentation 2017-11-06 14:30
An experimental study on coded aperture design for digital watermark extraction
Hiroki Hamasaki, Kentaro Nakai, Shingo Takeshita, Takeru Maehara (Kagoshima Univ.), Toshiki Sonoda (Kyushu Univ.), Michihiro Mikamo (Kagoshima Univ.), Hiroshi Kawasaki (Kyushu Univ.), Hajime Nagahara (Osaka Univ.), Satoshi Ono (Kagoshima Univ.) EMM2017-55
Abstract (in Japanese) (See Japanese page) 
(in English) When extracting a digital watermark from a captured image by a camera and a defocus blur happens,the watermark may not be extracted due to the blur. Therefore, this study attempts to design a coded aperture for extracting digital watermark from defocus blurred images. The proposed method adopts a genetic algorithm to automatically design a coded aperture that preserves frequency components including the watermark. Experimental results showed that the coded aperture designed by the proposed method allowed extracting the watermark in a wider depth range.
Keyword (in Japanese) (See Japanese page) 
(in English) coded aperture / digital watermarking / genetic algorithm / optical simulation / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 282, EMM2017-55, pp. 1-6, Nov. 2017.
Paper # EMM2017-55 
Date of Issue 2017-10-30 (EMM) 
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)
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Conference Information
Committee EMM  
Conference Date 2017-11-06 - 2017-11-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Kagoshima Univ. (Inamori Academy) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multimedia Fusion, Content Processing, Multimedia Retrieval, Digital Watermarking, and Related Topics 
Paper Information
Registration To EMM 
Conference Code 2017-11-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An experimental study on coded aperture design for digital watermark extraction 
Sub Title (in English)  
Keyword(1) coded aperture  
Keyword(2) digital watermarking  
Keyword(3) genetic algorithm  
Keyword(4) optical simulation  
1st Author's Name Hiroki Hamasaki  
1st Author's Affiliation Kagoshima University (Kagoshima Univ.)
2nd Author's Name Kentaro Nakai  
2nd Author's Affiliation Kagoshima University (Kagoshima Univ.)
3rd Author's Name Shingo Takeshita  
3rd Author's Affiliation Kagoshima University (Kagoshima Univ.)
4th Author's Name Takeru Maehara  
4th Author's Affiliation Kagoshima University (Kagoshima Univ.)
5th Author's Name Toshiki Sonoda  
5th Author's Affiliation Kyushu University (Kyushu Univ.)
6th Author's Name Michihiro Mikamo  
6th Author's Affiliation Kagoshima University (Kagoshima Univ.)
7th Author's Name Hiroshi Kawasaki  
7th Author's Affiliation Kyushu University (Kyushu Univ.)
8th Author's Name Hajime Nagahara  
8th Author's Affiliation Osaka University (Osaka Univ.)
9th Author's Name Satoshi Ono  
9th Author's Affiliation Kagoshima University (Kagoshima Univ.)
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Date Time 2017-11-06 14:30:00 
Presentation Time 25 
Registration for EMM 
Paper # IEICE-EMM2017-55 
Volume (vol) IEICE-117 
Number (no) no.282 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-EMM-2017-10-30 

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