Evaluation of Multiple-Scale 3D Characterization for Coal Physical Structure with DCM Method and Synchrotron X-Ray CT

Table 2

DCM computed average composition group volume fractions.

Area	Imaging resolution; (μm)	Computed volume fractions (%)				Computed time (s)
		Group A	Group B	Group C	Group D
Area 0	3.7	4.48	87.80	7.58	0.14	9.06 × 10^5
	11.84	4.37	88.00	7.51	0.12	6.55 × 10^4
Area 1	3.7	3.30	86.90	9.40	0.40	2447
	11.84	3.39	86.90	9.31	0.40	70
Area 2	3.7	5.25	89.30	5.40	0.05	2428
	11.84	4.97	89.60	5.36	0.07	79
Area 3	3.7	3.27	85.40	11.10	0.23	2274
	11.84	3.36	85.40	11.00	0.24	71
Area 4	3.7	4.82	89.10	6.02	0.06	2366
	11.84	4.63	89.40	5.85	0.12	72
Area 5	3.7	4.14	88.50	7.22	0.14	2547
	11.84	4.25	88.20	7.37	0.18	70
Area 6	3.7	4.35	88.20	7.28	0.17	2415
	11.84	4.21	88.40	7.16	0.23	73
Area 7	3.7	4.52	89.20	6.17	0.11	2386
	11.84	4.41	89.40	6.07	0.12	70