Abstract
The three-dimensional (3D) polygonal meshes are recently widely used in several domains, which necessitate the realistic visualization of the objects. Moreover, there is an urgent need to protect the 3D data properties for preventing unauthorized reproduction. The 3D digital watermarking technology is one of the best solutions to protect data from piracy during transmission through the internet. The current work proposed a novel robust watermarking scheme of polygonal meshes for copyright protection purposes. The proposed algorithm is based on the characteristics of the mesh geometry to embed a sequence of data bits into the object by slightly adjusting the vertex positions. Furthermore, the proposed method used a blind detection scheme. The watermarked model is perceptually indistinguishable from the original one and the embedded watermark is invariant to affine transformation. Through simulations, the quality of the watermarked object as well as the inserted watermark robustness against various types of attacks were tested and evaluated to prove the validity and the efficiency of our algorithm.
Highlights
Due to the rapid growth of computer graphics and computer vision, 3D models are widely used in several applications [1], [2]
A new robust and blind watermarking algorithm based on the alteration of the vertices positions in order to embed the watermark bits aiming to protect the intellectual property of the 3D objects was presented
The size of the watermark in these tests is 64 bits inserted by redundancy using a turbo code to ensure better robustness
Summary
Due to the rapid growth of computer graphics and computer vision, 3D models are widely used in several applications [1], [2]. A similar abundance of 3D models can be observed in other disciplines, including scientific and medical applications [3], [4], entertainment industry (movies, cartoons and video games) and in electronic commerce to build Customer Relationships In this imminent scenario, it is obligatory to develop techniques to protect the original 3D data ownership and to prevent their unauthorized copying. Other common operations used in various applications are similarity transformations which include translation, rotation and uniform scaling When performing these basic operations on watermarked object, the inserted watermark must be completely preserved. A new robust and blind watermarking algorithm based on the alteration of the vertices positions in order to embed the watermark bits aiming to protect the intellectual property of the 3D objects was presented.
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