| Project/Area Number |
20560380
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Kansai University |
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Principal Investigator |
MUNEYASU Mitsuji Kansai University, システム理工学部, 教授 (30229942)
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| Co-Investigator(Kenkyū-buntansha) |
HANADA YOSHIKO 関西大学, システム理工学部, 助教 (30511711)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 電子透かし技術 / レンズ歪み / 携帯端末 / グループ符号化法 / 周波数領域 / 不正コピー防止 / 枠線 / 歪み係数 / 線形探索法 |
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| Research Abstract |
In this research, we have developed new data embedding and extracting algorithm using mobile terminals. The image correction method for high-speed estimation of distortion coefficients and the group coding method for increasing the capacity of embedding the data have been proposed. By these methods, about 20 characters for alphabets and special characters can be embedded. In the detection rate, over 90 % can be achieved for the images captured by the camera in mobile phones. The feasibility study for the data extraction technique using display devices in which the image can also be freely changed has been investigated.
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