Abstract
This paper presents an algorithm aimed at the integrity protection of 3D models represented as a set of vertices and polygons. The proposed method defines a procedure to perform a fragile watermarking of the vertices’ data, namely 3D coordinates and polygons, introducing a very small error in the vertices’ coordinates. The watermark bit string is embedded into a secret vector space defined by the Karhunen–Loève transform derived from a key image. Experimental results show the good performance of the method and its security.
Highlights
Digital watermarking refers to a family of methods that embed a signal into a digital object.For example, visible logos in a TV broadcast or on a picture for sale on the web are two applications of visible watermarking
We present a blind, non-reversible fragile watermarking algorithm that adds an extra level of security and protects the integrity of 3D models, with negligible alterations to the host model vertices’ coordinates
Where v scans the set Υ of all vertices, c scans the set Ω of the attributes that can be modified by the embedder, the 0 symbol refers to the modified attribute in the watermarked model, and the function card() returns the cardinality of a set; Root Mean Squared Error (RMSE): measures the distortion between vertex coordinates of the host and the watermarked model, s
Summary
Digital watermarking refers to a family of methods that embed a signal into a digital object. Visible logos in a TV broadcast or on a picture for sale on the web are two applications of visible watermarking. Digital technology allows for more complex applications of the general idea of watermarking, allowing invisible (to humans) watermarks to be embedded into digital objects. Copyright protection, tracking origin, authentication, and integrity protection are examples of the application of this technology. It is possible to classify watermarking algorithms according to various characteristics [1]: the main properties of digital watermarking algorithms will be discussed in the following. A first, trivial, subjective property of watermarks is imperceptibility, that is the inability of a human being to recognize the presence of a watermark embedded into an object
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call