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

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"></td><td class="align_center">The Canny algorithm</td><td class="align_center">The HMS algorithm</td><td class="align_center">The ETAR algorithm</td><td class="align_center">The proposed algorithm</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">MSE</td><td class="align_center">5.8147</td><td class="align_center">5.6171</td><td class="align_center">8.3632</td><td class="align_center">2.8982</td></tr><tr><td class="align_left">SNR</td><td class="align_center">2.0091</td><td class="align_center">4.3257</td><td class="align_center">2.3107</td><td class="align_center">7.0879</td></tr><tr><td class="align_left">MAE</td><td class="align_center">157.2183</td><td class="align_center">176.4992</td><td class="align_center">158.5642</td><td class="align_center">55.1343</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of single ground-glass shadow lesion detection indicators.</div>

Computational and Mathematical Methods in Medicine

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Table 5

Table 5: A Study on Weak Edge Detection of COVID-19’s CT Images Based on Histogram Equalization and Improved Canny Algorithm 