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| Presentation | 2018-03-08 14:40 A countermeasure against camrip using the phase modulation Toshiki Sasazaki, Tatsuya Mori (Waseda Univ.)  ICSS2017-81 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Camrip, which aims to bootleg record a movie projected on a large screen, is a well-known and serious problem as it easily evades DRM mechanism and violates the copyrights of content holders. In this work, we propose a countermeasure against Camrip. The key idea is to make use of Moir'e, which can be generated by superimposing periodic pixel patterns with the phase modulation. That is, by superimposing a prepared pixel pattern and the pattern of color filter array used for camera devices, we can generate an image in which the prepared image (such as a warning message) becomes visible through the camera, but is invisible for a human who watches the generated image. We expect that embedding such a hidden warning message into a movie may suppress the damages caused by Camrip. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Camrip / Moir'e / Phase Modulation / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 481, ICSS2017-81, pp. 193-198, March 2018. | |
| Paper # | ICSS2017-81 | |
| Date of Issue | 2018-02-28 (ICSS) | |
| 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 | ICSS2017-81 |
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| Conference Information | |
| Committee | ICSS IPSJ-SPT |
| Conference Date | 2018-03-07 - 2018-03-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Hokubu Koyou Nouryoku Kaihatsu Sougou Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Security, Trust, etc. |
| Paper Information | |
| Registration To | ICSS |
| Conference Code | 2018-03-ICSS-SPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A countermeasure against camrip using the phase modulation |
| Sub Title (in English) | |
| Keyword(1) | Camrip |
| Keyword(2) | Moir'e |
| Keyword(3) | Phase Modulation |
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| 1st Author's Name | Toshiki Sasazaki |
| 1st Author's Affiliation | Waseda University (Waseda Univ.) |
| 2nd Author's Name | Tatsuya Mori |
| 2nd Author's Affiliation | Waseda University (Waseda Univ.) |
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| Speaker | Author-1 |
| Date Time | 2018-03-08 14:40:00 |
| Presentation Time | 25 minutes |
| Registration for | ICSS |
| Paper # | ICSS2017-81 |
| Volume (vol) | vol.117 |
| Number (no) | no.481 |
| Page | pp.193-198 |
| #Pages | 6 |
| Date of Issue | 2018-02-28 (ICSS) |
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