Table 6.

Segmentation accuracy of 2D snake (gap setting: 2nd) and 2.5D snake (k = 20; W_gap = 5; gap setting: 3rd; T_V = 0.75) algorithms for different thickness values and datasets.

Metric	DSC
Snake state Dataset	Original Snake thickness (k)					Merged Snake thickness (k)
	1 (2D)	10	20	30	Full	1 (2D)	10	20	30	Full
6_22.sub	0.68	0.68	0.72	0.74	0.73	0.72	0.76	0.75	0.77	0.82
bclpb-d.sub	0.85	0.89	0.92	0.92	0.91	0.86	0.90	0.91	0.91	0.89
cone.sub	0.86	0.86	0.93	0.93	0.94	0.88	0.87	0.90	0.90	0.90
gap18_sub	0.82	0.84	0.82	0.82	0.85	0.85	0.89	0.87	0.86	0.87
mac_serial_sub	0.68	0.71	0.73	0.77	0.35	0.65	0.69	0.70	0.77	0.35
od.sub	0.75	0.77	0.78	0.78	0.75	0.70	0.73	0.77	0.76	0.72
pedicle	0.73	0.72	0.79	0.77	0.74	0.78	0.78	0.91	0.83	0.84
spherule24mos1_	0.85	0.82	0.92	0.87	0.98	0.92	0.95	0.97	0.97	0.97
Average	0.78	0.79	0.83	0.82	0.78	0.79	0.82	0.85	0.85	0.80
Average (excluding mac_serial_sub)	0.79	0.80	0.84	0.83	0.84	0.81	0.84	0.87	0.86	0.86
Metric	MSBE (in nanometers)
Snake state Dataset	Original Snake thickness (k)					Merged Snake thickness (k)
	1 (2D)	10	20	30	Full	1 (2D)	10	20	30	Full
6_22.sub	33	30	24	24	18	32	23	32	34	14
bclpb-d.sub	16	11	8	10	9	17	11	9	11	9
cone.sub	18	17	10	10	9	14	14	10	10	10
gap18_sub	12	9	9	8	9	12	9	9	9	10
mac_serial_sub	26	19	28	21	110	31	23	42	21	110
od.sub	20	19	18	18	22	31	26	22	24	31
pedicle	48	49	41	49	50	32	32	11	21	21
spherule24mos1_	30	31	18	28	8	15	9	7	7	8
Average	25	23	20	21	29	23	18	18	17	27
Average (excluding mac_serial_sub)	25	24	18	21	18	22	18	14	17	15