Quaternion Wavelet Analysis and Application in Image Denoising

<table>The average PSNR varies with <svg height="12.175" id="M173" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 8.6374998 12.175" width="8.6374998" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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t0.5 -143.5h2q155 193 155 297q0 26 -12 47q-5 8 -5 15q0 16 12.5 27t29.5 11q21 0 34 -21t13 -55z" id="x1D6FE"></path></g>
</svg> of multiple images in different levels of noise variance. </table>

Mathematical Problems in Engineering

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Figure 5

Figure 5: Quaternion Wavelet Analysis and Application in Image Denoising 