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

Table 1

Computation time for various searching steps for actual and proposed methods.

Computation time (ms)
Searching step size	Actual method	Proposed method
1.5	200	120
0.75	180	110
0.375	200	120
0.1875	180	140
0.09375	220	160