Geometrically Invariant Object-based Watermarking Using SIFT Features

摘要

Owing to the development of the Internet, digital content has become easier to access. In order to stop illegal content copy, some methods have been proposed, and digital watermarking is one of them. Digital watermarking is a technology that embeds a short message (a watermark) in the image without affecting the usability but that can be detected using dedicated analysis software. To apply to video protection, digital watermarking needs to become an object-based method, because the objects, not the whole image are usually attacked. One of the biggest weaknesses of such methods is that they are sensitive to geometrical distortions. In this paper, by using the combination of a hiding method and object matching, we propose an object-based watermarking that is invariant to geometrical distortions.