Accurate Measurement of Strain in Noncontact Surface Deformation Using Subset-Based Digital Image Correlation

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Subset size</td><td class="align_center">Algorithm</td><td class="align_center">Average iteration</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left" rowspan="2">41 × 41</td><td class="align_center">NR</td><td class="align_center">2.463</td></tr><tr><td class="align_center">Proposed method</td><td class="align_center">1.042</td></tr><tr><td class="align_left" colspan="3"><hr/></td></tr><tr><td class="align_left" rowspan="2">21 × 21</td><td class="align_center">NR</td><td class="align_center">2.472</td></tr><tr><td class="align_center">Proposed method</td><td class="align_center">1.057</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of average iteration among various algorithms.</div>

Contrast Media & Molecular Imaging

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Table 3

Table 3: Accurate Measurement of Strain in Noncontact Surface Deformation Using Subset-Based Digital Image Correlation 