Research on the Infrared Thermographic Detection of Concrete under Solar Heating

Table 3

Optimization parameters.

Def.	ΔT (°C)
		Initial	CLAHE	GHE	Initial	CLAHE	GHE
A1-1	3.5	32.6	56.5	60.4	0.86	1.04	—
A1-2	1.2	14.8	39.0	54.5	1.18	0.93	0.81
A2-1	0.4	22.3	65.0	60.3	—	0.73	0.80
A2-2	0.4	16.6	53.7	51.2	—	0.77	0.85
B-1	5.7	12.1	56.5	61.6	1.08	1.24	1.30
B-2	4.3	10.2	54.5	65.2	1.14	1.36	1.27
B-3	4.0	7.8	48.3	59.8	1.35	1.27	1.23
B-4	3.0	4.4	45.5	55.9	0.71	1.26	1.29
B-5	3.3	5.6	31.1	61.0	0.89	1.16	1.28
B-6	1.2	1.9	29.5	58.5	—	0.94	1.13
B-7	0.7	—	15.8	55.2	—	0.88	1.10
B-8	0.5	—	—	51.3	—	—	1.03