Watermark detectors based on nthorder statistics
Teddy Furon, Gunol C. Silvestre, Neil Hurley · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2002
This paper deals with some detection issues of watermark signals. We propose an easy way to implement an informed watermarking embedder whatever the detection function. This method shows that a linear detection function is not suitable for side information. This is the reason why we build a family of non-linear functions based on nth-order statistics. Used with a side-informed embedder, its performance is much better than the classical direct sequence spread spectrum method.