| Summary: | 碩士 === 國立屏東教育大學 === 資訊科學系碩士班 === 102 === For advance of science and technology, the storage syle has changing from analog to digital.And that will create a lot of problem about judge the intellectual property rights for owner. Digital atermark is a way of sovle this problem.
In this paper, we are focus on the image file which have been embedded watermark to avoid the attack. We used the discrete cosine transform to transform the image, and find the best embed position based on gentic algorithm. We assign the embed position as chromosome in gentic algorithm, through the characteristic of gentic algorithm to search the best chromosome, or we can say that the best embed position.
In this way, the watermark which inverse by image has been attack still can identify really clearly. Means that the watermark still have good robustness. For reason that this way is effective.
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