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Paper Abstract and Keywords
Presentation 2004-09-17 14:30
Yuusuke Seki (Tokyo Metropolitan Univ.), Hiroyuki Kobayashi (TMCT), Masaaki Fujiyoshi, Hitoshi Kiya (Tokyo Metropolitan Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, a watermarking method without reference images for coded Images is proposed, on the assumption of embedding digital watermark in the transform coefficients that are rounded to integers. Conventional methods need to specify the position of the transform coefficients for embedding the watermark. And information of the position is needed to extract the watermark, in conventional decoders. On the other hand, the proposed method does not need specifying the position, therefore the information of the position is not needed to extract the watermark. From this feature, the proposed method has a large degree of freedom to select positions for embedding. That is, the method can choose a convenient position suitably for every image coding system or picture and embed the watermark. From this, the method attains the improvement of image degradation, compression efficiency, etc. than the conventional methods. Simulation results show the usefulness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Coded Image / Digital Watermarking / Oblivious Watermarking / JPEG / / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 314, IE2004-47, pp. 41-46, Sept. 2004.
Paper # IE2004-47 
Date of Issue 2004-09-10 (CQ, OIS, IE) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee IE CQ LOIS IEE-CMN  
Conference Date 2004-09-16 - 2004-09-17 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To IE 
Conference Code 2004-09-IE-CQ-OIS-IEE-CMN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) none 
Sub Title (in English)  
Keyword(1) Coded Image  
Keyword(2) Digital Watermarking  
Keyword(3) Oblivious Watermarking  
Keyword(4) JPEG  
1st Author's Name Yuusuke Seki  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Hiroyuki Kobayashi  
2nd Author's Affiliation Tokyo Metropolitan College of Technology (TMCT)
3rd Author's Name Masaaki Fujiyoshi  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
4th Author's Name Hitoshi Kiya  
4th Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Speaker Author-1 
Date Time 2004-09-17 14:30:00 
Presentation Time 30 minutes 
Registration for IE 
Paper # CQ2004-86, OIS2004-40, IE2004-47 
Volume (vol) vol.104 
Number (no) no.310(CQ), no.312(OIS), no.314(IE) 
Page pp.41-46 
Date of Issue 2004-09-10 (CQ, OIS, IE) 

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