Minimum Error Thresholding Segmentation Algorithm Based on 3D Grayscale Histogram

Table 2

Comparison of thresholds and time cost (second).

	2D Otsu		2D maximum entropy		2D-MET		3D-MET
	Threshold	Time	Threshold	Time	Threshold	Time	Threshold	Time
SAR1	(106, 127)	1.45	(89, 134)	2.18	(45, 68)	2.36	(92, 124, 113)	3.71
SAR2	(166, 202)	3.95	(202, 192)	4.64	(102, 93)	4.46	(109, 102, 152)	9.42
License 1	(103, 217)	0.36	(205, 108)	1.38	(31, 47)	1.41	(53, 77, 61)	2.67
License 2	(71, 75)	0.40	(131, 133)	1.59	(42, 48)	1.68	(63, 57, 91)	3.18