A Novel Fractional-Discrete-Cosine-Transform-Based Reversible Watermarking for Healthcare Information Management Systems

<table>The secret key <svg height="11.6125" id="M55" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 13.35 11.6125" width="13.35" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.55)"><use xlink:href="#x1D40A"></use></g>
</svg> used for mapping the watermark onto the host image.</table>

Mathematical Problems in Engineering

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Figure 2

Figure 2: A Novel Fractional-Discrete-Cosine-Transform-Based Reversible Watermarking for Healthcare Information Management Systems 