Privacy Protection of Digital Images Using Watermarking and QR Code-based Visual Cryptography

<table class="algorithm-group"><tr><td><table class="algorithm" id="alg2"><tr><td> </td><td>INPUT: Watermark image (WI)</td></tr><tr><td> </td><td>OUTPUT: QR code-based shares</td></tr><tr><td>(1)</td><td>Select watermarked image (WC)</td></tr><tr><td>(2)</td><td>Perform limited gray level halftoning on the watermarked image</td></tr><tr><td>(3)</td><td>Perform compression on halftoned image</td></tr><tr><td>(4)</td><td>Split the halftoned image into two shares.</td></tr><tr><td>(5)</td><td>Embed QR code into the resultant shares.</td></tr><tr><td>(6)</td><td>Stop</td></tr></table></td></tr></table>

<div> Algorithm for QR code-based visual cryptography.</div>

Advances in Multimedia

alg2

Algorithm 2

Algorithm 2: Privacy Protection of Digital Images Using Watermarking and QR Code-based Visual Cryptography 