Reversible Watermarking Using Priority Embedding through Repeated Application of Integer Wavelet Transform

Abstract

Abstract Digital Watermarking is a well-known technique for digital content protection. Reversible Watermarking techniques are a special class of watermarking techniques whereby after the watermark has been extracted, the original content can be retrieved without any distortion. In this paper we present a novel high capacity reversible watermarking technique for grayscale images, based on repeated application of integer wavelet transform. The process is performed after determining a priority of the different image pixels to be used for watermark embedding. Our experimental results fare favourably when compared to other state–of–the–art reversible watermarking techniques of similar principle.KeywordsDigital watermarkingembedding capacityinteger wavelet transformPSNRreversible watermarking