The current work is focusing on the implementation of a robust multibit watermarking algorithm for digital images, which is based on an innovative spread spectrum technique analysis. The paper presents the watermark embedding and detection algorithms, which use both wavelets and the Discrete Cosine Transform and analyzes the arising issues. © 2008 Elsevier B.V. All rights reserved.
Tsolis, D., Nikolopoulos, S., Drossos, L., Sioutas, S., & Papatheodorou, T. (2009). Applying robust multibit watermarks to digital images. Journal of Computational and Applied Mathematics, 227(1), 213–220. https://doi.org/10.1016/j.cam.2008.07.035