Copyright Protection Method based on the Main Feature of Digital Images
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With the rapid development of information technology, images can be easily copied, modified, and re-released. This paper proposes a copyright protection method based on the main feature of digital images by using SIFT algorithm. It aims to prevent the image which main feature information is stored in database from being abused. The innovation point is to store feature information instead of images with much redundant information, which can accelerate matching. It can be judged whether a picture infringes copyright by extracting its main feature information, then comparing with those in database. The experiment results show that this method can resist tampering attack such as JPEG compression, noise, and geometric distortion.
Keywordsdigital image copyright protection SIFT algorithm main feature information image tampering search matching
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