William Puech, Philippe Montesinos, Michel Dumas, "Color Image Watermarking Robust to JPEG Compression" in Proc. IS&T CGIV 2002 First European Conf. on Colour in Graphics, Imaging, and Vision, 2002, pp 81 - 85, https://doi.org/10.2352/CGIV.2002.1.1.art00019