Paper Abstract and Keywords |
Presentation |
2014-11-21 13:10
Information hiding in a Jigsaw puzzle pattern
-- Implementation in the Android device -- Kenji Togashi, Hiroshi Ito (Nihon Univ.) EA2014-34 EMM2014-62 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We propose an information hiding method using the pattern of a jigsaw puzzle. The method keeps a bit of information in the direction of the curved part of each piece. To decode the hidden information, we compare the number of black pixels present in both areas across the midpoint of each side of the piece, which would be larger in the direction of the curve. The proposed method may use a yellow pattern. The pixel values would vary in the captured image especially when the yellow ink has been used. The colors in the pattern, superimposed characters and background are separated by the k-means method. The pixel values on the pattern are then converted to black while those in other areas are converted to white,
before decoding. We implemented the decoder in the Android terminal. The homography transformation is used to remove distortions in the image when it is taken with the Android device camera. We found by experiment that the error rate has bean larger when the pattern is taken by camera than by scanner. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Jigsaw puzzle / Geometric pattern / Information hiding / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 316, EMM2014-62, pp. 37-41, Nov. 2014. |
Paper # |
EMM2014-62 |
Date of Issue |
2014-11-13 (EA, EMM) |
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) |
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EA2014-34 EMM2014-62 |
Conference Information |
Committee |
EMM EA |
Conference Date |
2014-11-20 - 2014-11-21 |
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(See Japanese page) |
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Registration To |
EMM |
Conference Code |
2014-11-EMM-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Information hiding in a Jigsaw puzzle pattern |
Sub Title (in English) |
Implementation in the Android device |
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Jigsaw puzzle |
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Geometric pattern |
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Information hiding |
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1st Author's Name |
Kenji Togashi |
1st Author's Affiliation |
Nihon University (Nihon Univ.) |
2nd Author's Name |
Hiroshi Ito |
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Nihon University (Nihon Univ.) |
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Speaker |
Author-1 |
Date Time |
2014-11-21 13:10:00 |
Presentation Time |
30 minutes |
Registration for |
EMM |
Paper # |
EA2014-34, EMM2014-62 |
Volume (vol) |
vol.114 |
Number (no) |
no.315(EA), no.316(EMM) |
Page |
pp.37-41 |
#Pages |
5 |
Date of Issue |
2014-11-13 (EA, EMM) |
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