A Variational Level Set Approach Based on Local Entropy for Image Segmentation and Bias Field Correction

Table 1

Comparison of iterations and computational time(s) for the images in Figure 4 in the same order.

Image	RSF model		Li’s model		LGDF model		Zhang’s model		Wang’s model		Our method
	Iterations	Time	Iterations	Time	Iterations	Time	Iterations	Time	Iterations	Time	Iterations	Time
1	70	2.11	30	16.30	150	5.86	60	4.79	200	11.26	60	3.74
2	300	24.68	90	8.29	280	8.56	150	40.73	800	28.22	100	15.13
3	200	35.41	100	28.42	120	35.84	150	42.48	500	41.06	80	13.85
4	140	8.47	50	5.82	130	19.51	80	15.18	300	6.35	40	10.78
5	25	3.84	10	2.06	200	15.84	120	21.10	400	7.11	60	11.65