A New Difference Expansion Transform in Triplets for Reversible Data Hiding

Eleftherios Chrysochos (1) , V. Fotopoulos (2) , Athanassios N. Skodras (2, 3)

1 Digital Systems & Media Computing Laboratory, School of Science and Technology
2 Informatics
3 Digital Systems & Media Computing Laboratory, School of Science and Technology

Difference expansion (DE) has been widely used for reversible data hiding. In this paper a novel transform which embeds two bits of information in a triplet of coefficients is presented. This transform can be applied in spatial or frequency domain and induces minimum distortion to the initial data or coefficients. The proposed method outperforms all similar DE methods using triplets in terms of computational cost, visual quality and bitrate.

Mots clés: Physical Sciences

Domaines: Informatique [cs]

Eleftherios Chrysochos, V. Fotopoulos, Athanassios N. Skodras. A New Difference Expansion Transform in Triplets for Reversible Data Hiding. International Journal of Computer Mathematics, 2011, pp.1. ⟨10.1080/00207160.2010.539210⟩. ⟨hal-00684228⟩