Watermarking of Color Images based on a multi-layer process
Gaël Chareyron, Alain Trémeau · Conference on Colour in Graphics Imaging and Vision · 2002
this paper we present a new method of watermarking devoted to color images. Watermarking technics generally sign images by introducing changes that are imperceptible to the human eye, but are easily recoverable by a computer program. The locations in the image where the signature is embedded are determined by a secret key in order to prevent possible attacks by pirates or alterations due to compression and coding transformations, or geometrical transformations