Intellectual property in cyberspace-what technological/legislative tools are necessary for building a sturdy global information infrastructure?

Lecture Notes in Business Information Processing

2014

Abstract. In this work we propose an efficient model for watermarking images that are intended for uploading on the web under intellectual property protection. Headed to this direction, we recently suggested a way in which an integer number w which being transformed into a selfinverting permutation, can be represented in a two dimensional (2D) object and thus, since images are 2D structures, we propose a watermarking algorithm that embeds marks on them using the 2D representation of w in the frequency domain. In particular, we propose a watermarking technique that uses the 2D representation of self-inverting permutations and utilizes marking at specific areas thanks to partial modifications of the image's Discrete Fourier Transform (DFT). Those modifications are made on the magnitude of specific frequency bands and they are the least possible additive information ensuring robustness and imperceptiveness. We have experimentally evaluated our algorithms using various images of different characteristics under JPEG compression, Gaussian noise addition, and geometric transformations. The experimental results show an improvement in comparison to the previously obtained results and they also depict the validity of our proposed codec algorithms.

Section: Introductionmentioning

confidence: 99%

Watermarking Digital Images in the Frequency Domain: Performance and Attack Issues

Lecture Notes in Business Information Processing

2014

“…This frequent use of the internet means that measures taken for internet security are indispensable since the web is not risk-free (Chun-Shien et al, 2000;Davis, 1997). One of those risks is the fact that the web is an environment where intellectual property is under threat since a huge amount of public personal data is continuously transferred, and thus such data may end up on a user who falsely claims ownership.…”

Section: Introductionmentioning

confidence: 99%

Watermarking Images in the Frequency Domain by Exploiting Self-inverting Permutations

Proceedings of the 9th International Conference on Web Information Systems and Technologies

2013

Abstract:In this work we propose efficient codec algorithms for watermarking images that are intended for uploading on the web under intellectual property protection. Headed to this direction, we recently suggested a way in which an integer number w which being transformed into a self-inverting permutation, can be represented in a two dimensional (2D) object and thus, since images are 2D structures, we have proposed a watermarking algorithm that embeds marks on them using the 2D representation of w in the spatial domain. Based on the idea behind this technique, we now expand the usage of this concept by marking the image in the frequency domain. In particular, we propose a watermarking technique that also uses the 2D representation of selfinverting permutations and utilizes marking at specific areas thanks to partial modifications of the image's Discrete Fourier Transform (DFT). Those modifications are made on the magnitude of specific frequency bands and they are the least possible additive information ensuring robustness and imperceptiveness. We have experimentally evaluated our algorithms using various images of different characteristics under JPEG compression. The experimental results show an improvement in comparison to the previously obtained results and they also depict the validity of our proposed codec algorithms.

“…All that urged the adoption of new laws and the development of systems for the protection of intellectual property (Davis, 1997). But still the cyberspace is chaotic nowadays and that makes it extremely difficult to have any kind of control over it.…”

Section: Introductionmentioning

confidence: 99%

A Watermarking System for Teaching Students to Respect Intellectual Property Rights

Proceedings of the 4th International Conference on Computer Supported Education

2012

Abstract:Our work proposes a watermarking system for supporting the teaching process for educating students to respect intellectual property rights. In particular, we propose an educational tool, which we named WaterIP, that can be efficiently used by students to enable them to perceive how to protect their own ideas and how to respect others' intellectual property. Our system uses an efficient technique for watermarking images by exploiting certain properties of a specific 2D representation of permutations, it has a friendly graphical user interface and shows interesting performance figures. The system provides students with two main working levels: (I) the student creates a secret key, i.e., the watermark, and embeds it into his own image, and (II) he makes the marks of a watermarked image visible in order to later extract the watermark from it using only, for pedagogical reasons, a ruler and a pencil. The watermarking method behind WaterIP can be applied to all educational levels beginning from early childhood up to preliminary and high schools. We demonstrate the educational effectiveness of our WaterIP system by presenting ways of how it can be applied in class and show that WaterIP helps to understand what intellectual property rights really stand for.