Tatouage couleur adaptatif fondé sur l'utilisation d'espaces perceptifs uniformes

Patrick Bas (1) , Jean-Marc Chassery (1)

1 LIS - Laboratoire des images et des signaux

This paper presents a watermarking scheme that uses uniform color spaces to provide a local and adaptive embedding space. The CIE-Lab and CIE-XYZ uniform color space and the CIE-94 metric have been used to extract a masking domain that is adapted to each color pixel value. Calculus of the masking vector mu is given performing a differential calculus that relies on relations between uniform color spaces and $RGB$ space. The embedding of the watermark is after achieved by quantization of DCT coefficients and the whole system is evaluated for different constraints such as invisibility and robustness to JPEG compression, low-pass filtering and valumetric transforms. Finally the presented scheme is compared with other schemes that uses other color components (Luminance or Blue).

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Patrick Bas, Jean-Marc Chassery. Tatouage couleur adaptatif fondé sur l'utilisation d'espaces perceptifs uniformes. Traitement du Signal, 2004, pp.eletronic version. ⟨hal-00166595⟩