High Accurate Crack Reconstruction Based on an Improved Discontinuous Digital Image Correlation: Subset Restore and Adaptation Method

Table 2

Mean bias error and standard deviation error obtained using different methods^a.

Result range	The proposed discontinuous DIC				Standard DIC
	Full ROI	0.0105	0.0213	0.0143	0.0175	0.3472	0.5142	0.4543	0.5398
Vicinity of crack	−0.1302	0.1916	−0.2133	0.1583	−3.7218	4.2046	−5.4437	4.9795
Continuous area	0.0198	0.0177	0.0227	0.0169	0.0271	0.0196	0.0218	0.0215

^aIn pixels.