Table 2.

Running times of different thresholding methods

Methods	Figure 5a	Figure 6a	Figure 7a	Figure 8a	Figure 9a	Figure 10a	Figure 11a	Figure 12a	Average
Standard Otsu method (ms)	1.45	1.87	1.49	1.63	1.6	3.45	1.88	1.76	1.89
2-D Otsu method (ms)	1459.18	1393.91	1534.09	1358.98	1391.35	2573.63	1520.35	1478.4	1588.74
2-D maximum entropy (ms)	4348.39	4361.48	4504.75	4030.64	4287.01	8039.61	4430.92	4411.26	4801.76
This paper method (ms)	9.372	9.914	6.79	8.888	8.868	11.346	8.834	9.743	9.22