An improved mechanism for reversible watermarking of images

Muhammad Ishtiaq; Bilal Haider; Faiz Ali; Salabat Khan

doi:10.1117/12.2031016

19 July 2013 An improved mechanism for reversible watermarking of images

Muhammad Ishtiaq, Bilal Haider, Faiz Ali, Salabat Khan

Proceedings Volume 8878, Fifth International Conference on Digital Image Processing (ICDIP 2013); 88780T (2013) https://doi.org/10.1117/12.2031016
Event: Fifth International Conference on Digital Image Processing, 2013, Beijing, China

Abstract

Reversible watermarking algorithms allow extraction of the hidden information to ensure authenticity and restore original medium. Prediction-error expansion (PEE) methods give high payload with little or no visible distortion. In these methods performance of the algorithm relies heavily on predictor`s response. In this study image pixels are predicted using 8 pixels within a 3×3 neighborhood of a pixel. Image pixels are divided into two sets and information bits in each set are embedded using PEE and histogram shifting (HS). Better prediction in conjunction with HS increases imperceptibility of the watermarked image. Experimental results indicate superior performance of the proposed scheme in comparison to recent methods published in the literature.

Citation Download Citation

Muhammad Ishtiaq, Bilal Haider, Faiz Ali, and Salabat Khan "An improved mechanism for reversible watermarking of images", Proc. SPIE 8878, Fifth International Conference on Digital Image Processing (ICDIP 2013), 88780T (19 July 2013); https://doi.org/10.1117/12.2031016

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