A Study on Weak Edge Detection of COVID-19’s CT Images Based on Histogram Equalization and Improved Canny Algorithm

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/cmmm/volume-2021/5208940/figures/5208940.fig.006a.svgz" name="5208940.fig.006a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Diffuse ground-glass shadow in both lungs</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/cmmm/volume-2021/5208940/figures/5208940.fig.006b.svgz" name="5208940.fig.006b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Single ground-glass shadow</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/cmmm/volume-2021/5208940/figures/5208940.fig.006c.svgz" name="5208940.fig.006c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Paving stone</td></tr><tr class="fig-image" id="d"><td><object data="https://static-preview.hindawi.com/articles/cmmm/volume-2021/5208940/figures/5208940.fig.006d.svgz" name="5208940.fig.006d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Patchy lungs with field consolidation</td></tr></table>

Computational and Mathematical Methods in Medicine

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Figure 6

Figure 6: A Study on Weak Edge Detection of COVID-19’s CT Images Based on Histogram Equalization and Improved Canny Algorithm 