High capacity reversible data hiding and content protection for radiographic images

摘要: The watermarking of digital images has an important role in the protection content with respect to many aspects. In this paper we present a reversible algorithm for hiding information into medical having luminance histograms particular characteristics. Some radiographic have property that not all gray levels are present; leads sequences 0 values (0-runs) corresponding histograms. It is possible use these 0-runs encode by modifying pixels contiguous runs; encoding also run it restore original image after extracting stored data. work novel technique capable exploiting histogram achieve high capacity. We show optimization problem arises those cases which two or more non-zero frequency 0-runs. Part watermark may be devoted signature image, whose authenticity verified user. HighlightsDesign method X-ray images.Fragile, based technique.High capacity (up than 1bpp) low distortion.Experiments on large dataset including 100 images.