Image Denoising Algorithm Combined with SGK Dictionary Learning and Principal Component Analysis Noise Estimation

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2018/1259703/figures/1259703.fig.006a.svgz" name="1259703.fig.006a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Variation of noise estimation absolute</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2018/1259703/figures/1259703.fig.006b.svgz" name="1259703.fig.006b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Variation of noise estimation time</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/mpe/volume-2018/1259703/figures/1259703.fig.006c.svgz" name="1259703.fig.006c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Variation of PSNR</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/mpe/volume-2018/1259703/figures/1259703.fig.006d.svgz" name="1259703.fig.006d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Variation of MSE</td></tr></table>

<div>Variation of denoising performance with noise standard deviation on five algorithms.</div>

Mathematical Problems in Engineering

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Figure 6

Figure 6: Image Denoising Algorithm Combined with SGK Dictionary Learning and Principal Component Analysis Noise Estimation 