Title :
Robust watermarking of digital images based on chaotic mapping and DCT
Author :
Chrysochos, E. ; Fotopoulos, V. ; Skodras, A.N.
Author_Institution :
Digital Syst. & Media Comput. Lab., Hellenic Open Univ., Patras, Greece
Abstract :
In this paper, a new robust watermarking scheme is presented. The algorithm is based on a chaotic function and a correlation method for detection, operating in the frequency domain. The proposed scheme is blind and comparing to other chaos related watermarking methods, experimental results exhibit satisfactory robustness against a wide variety of attacks such as filtering, noise addition, geometric manipulations and JPEG compression with very low quality factors. The scheme also outperforms traditional frequency domain embedding both in terms of robustness and quality.
Keywords :
chaotic communication; correlation methods; discrete cosine transforms; frequency-domain analysis; image watermarking; DCT; JPEG compression; chaotic function; chaotic mapping; correlation methods; detection algorithm; discrete cosine transforms; filtering; frequency-domain analysis; geometric manipulations; noise addition; quality factors; robust digital image watermarking; Abstracts; Airplanes; Discrete cosine transforms; Discrete wavelet transforms; Image coding; Robustness; Standards;
Conference_Titel :
Signal Processing Conference, 2008 16th European
Conference_Location :
Lausanne