In this article, we present an original DCT-based water-marking method on color images and integrating an error-correcting code (ECC) by generating polynom. This technique has been developed to be robust versus compression.
G. Lo-varco, W. Puech, M. Dumas, "DCT-Based Watermarking Method Using Color Components" in Proc. IS&T CGIV 2004 Second European Conf. on Colour in Graphics, Imaging, and Vision, 2004, pp 146 - 150, https://doi.org/10.2352/CGIV.2004.2.1.art00031