Defect Detection in Composite Products Based on Sparse Moving Window Principal Component Thermography

Table 2

SNR₂ of different methods.

Methods/SNR2/defect	Def_1	Def_2	Def_3	Def_4	Def_5	Def_6	Def_7	Sum
PCT	10.50	7.88	8.81	8.48	0.85	−2.00	−0.87	39.39
SPCT	11.28	8.62	9.56	9.23	1.64	−1.15	−0.20	41.68
MWPCT	12.71	9.38	10.08	9.85	1.17	−2.27	−0.53	46.00
SMWPCT	12.97	10.13	11.18	10.55	2.86	−0.05	0.90	48.65