Recognition of Tunnel Lining Cracks Based on Digital Image Processing

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Crack type</td><td class="align_center">Ω minimum</td><td class="align_center">Ω <sub>maximum</sub></td><td class="align_center">Ω average</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Linear crack</td><td class="align_center">2</td><td class="align_center">3</td><td class="align_center">2.65</td></tr><tr><td class="align_left">Network crack</td><td class="align_center">4</td><td class="align_center">12</td><td class="align_center">6.42</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Differences in Ω value of different fracture types.</div>

Mathematical Problems in Engineering

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Table 1

Table 1: Recognition of Tunnel Lining Cracks Based on Digital Image Processing 