Histogram Modification and Wavelet Transform for High Performance Watermarking

<table>Watermarked Lena image obtained by our scheme ((a) 10580 bits hidden, 69.51 dB) and Zhao et al.’s scheme ((b) 8239 bits hidden, 50.65 dB) with <svg height="11.375" id="M142" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 46.512501 11.375" width="46.512501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>.</table>

Mathematical Problems in Engineering

fig8

Figure 8

Figure 8: Histogram Modification and Wavelet Transform for High Performance Watermarking 