| Presentation | 2012-03-01 Automatic Determination Method of the Threshold for Print-type Watermark Detection Akitaka OKOU, Shinichiro MIYAOKA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a watermarking method resistant to printing and capturing of images based on DCT. In the conventional method, for detection of watermarks embedded in the DCT region, it is necessary to determine the threshold. However the automatic determination method of the threshold has not been studied. Proposed method is a technique that can automatically determine this threshold by setting blocks expressing the threshold in the DCT region. We also consider the frequency band used for embedding watermarks. The conventional technique sets a limit on DCT region used for embedding watermarks to provide resistance to geometric transformations caused by the printing and capturing. If the deformation is compensated by applying the image registration, frequency band which were not used in the past study can be used for embedding watermarks. The experimental result clarified that the proposed method has the resistance to printing and capturing. It can also determine the threshold robustly. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DCT / data embedding / Threshold Block Method / image registration |
| Paper # | SIS2011-55 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2012/2/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Automatic Determination Method of the Threshold for Print-type Watermark Detection |
| Sub Title (in English) | |
| Keyword(1) | DCT |
| Keyword(2) | data embedding |
| Keyword(3) | Threshold Block Method |
| Keyword(4) | image registration |
| 1st Author's Name | Akitaka OKOU |
| 1st Author's Affiliation | Tokyo University of Technology() |
| 2nd Author's Name | Shinichiro MIYAOKA |
| 2nd Author's Affiliation | Tokyo University of Technology |
| Date | 2012-03-01 |
| Paper # | SIS2011-55 |
| Volume (vol) | vol.111 |
| Number (no) | 457 |
| Page | pp.pp.- |
| #Pages | 6 |
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