Cryptographic Copyright Protection for Digital Images based on Watermarking Techniques (1999)
| Citations: | 6 - 0 self |
BibTeX
@MISC{Ruanaidh99cryptographiccopyright,
author = {Joseph O Ruanaidh and Holger Petersen and Alexander Herrigel and Shelby Pereira and Thierry Pun},
title = {Cryptographic Copyright Protection for Digital Images based on Watermarking Techniques},
year = {1999}
}
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Abstract
In this paper 1 we present a new approach for the secure and robust copyright protection of digital images. We describe a system for generating digital watermarks and for trading watermarked images. The system is based on a new watermarking technique, which is robust against image transformation techniques such as compression, rotation, translation, scaling and cropping. It uses modulation of the magnitude components in Fourier space to embed a watermark and an accompanying template and, during watermark extraction, reads a template in the log polar transform of the frequency domain. The template is used for analyzing scaling and rotation suffered by the watermarked stego-image. The detection of the watermarks is also possible without any need for the original cover-image. In addition, the system applies asymmetric cryptographic protocols for different purposes, namely embedding/detecting the watermark and transferring watermarked data. The public key technique is applied for the con...
