Dependence of Shape-Based Descriptors and Mass Segmentation Areas on Initial Contour Placement Using the Chan-Vese Method on Digital Mammograms

Table 2

Evaluation metrics for differences in segmented areas (JSC) and boundary moments (, , and ), due to changes in the location of the initial level set contours evolved with tuneable parameters , for masses in Figure 3.

Masses	JSC				Method
A	0.83	0.3186	0.3715	0.0530	Manual	68.4	67.1	59.8
		0.1563	0.1848	0.0286	Proposed
B	0.77	0.3417	0.4264	0.0846	Manual	8.1	7.2	3.5
		0.3152	0.3969	0.0817	Proposed
C	0.78	0.2691	0.3269	0.0578	Manual	9.7	3.1	23.0
		0.2442	0.3170	0.0728	Proposed
D	0.84	0.2505	0.3120	0.0615	Manual	87.0	86.8	86.0
		0.0986	0.1231	0.0245	Proposed
E	0.71	0.2715	0.3300	0.0585	Manual	6.0	8.1	17.6
		0.2882	0.3580	0.0698	Proposed
F	0.89	0.2969	0.3826	0.0857	Manual	8.2	7.4	4.8
		0.3224	0.4122	0.0899	Proposed
G	0.87	0.1835	0.2168	0.0333	Manual	1.7	9.9	45.3
		0.1866	0.2394	0.0528	Proposed