| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Research Abstract |
Our goal is to propose optimal decoding algorithms for digital watermarking. Since it is hard to obtain Bayes optimal solutions, we need to devise decoding algorithms. We studied both methods reducing interference between the watermarks and property of noises caused by attacks, and then, we proposed various algorithms and evaluated them. As a result, we found asynchronous update is better than synchronous one, and stochastic estimation is better than deterministic one.
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