A standardised protocol for texture feature analysis of endoscopic images in gynaecological cancer

Table 7 Percentile values of the texture features from two consecutive angles for the calf endometrium after gamma correction (N = 20). Also statistical analysis results is tabulated for comparing before vs after gamma correction for angle 1 and angle 2 views.

											Statistical Analysis
	Angle 1 View					Angle 2 View					Angle 1 vs Angle 2 after gamma	Before vs After Gamma for Angle 1	Before vs After Gamma for Angle 2
	P5%	P25%	P50%	P75%	P95%	P5%	P25%	P50%	P75%	P95%	H	H	H
SF
Mean	33,68	38,98	45,56	94,08	181,43	29,47	35,91	44,78	51,99	66,35	0	0	0
Variance	51,96	97,59	199,06	314,46	484,39	62,07	66,4	104	276,13	456,75	0	0	0
Median	33,98	39,25	45,91	90,93	180,9	27,96	35,77	47,91	54,35	73,26	0	0	0
Mode	42	42,75	44	88,25	182	24	35,25	51	63,75	84	0	0	0
Skewness	-0,38	-0,18	-0,1	0,05	0,36	-0,51	-0,41	-0,26	0,05	0,36	0	0	0
Kurtosis	1,95	2,34	2,59	2,85	3,49	1,64	2,1	2,34	2,51	2,66	0	0	0
Entropy	3,38	3,65	3,98	4,23	4,42	3,47	3,48	3,67	4,05	4,19	0	0	0
SGLDM
Contrast	27,81	28,98	30,4	31,05	32,57	26,92	27,91	29,12	30,7	31,34	0	0	0
Correlation	0,72	0,84	0,92	0,94	0,97	0,75	0,79	0,85	0,94	0,97	0	0	0
Variance	51,69	96,95	197,6	311,39	479,23	61,75	65,99	103,74	273,98	456,32	0	0	0
Homogeneity	0,2	0,2	0,21	0,22	0,23	0,2	0,2	0,21	0,21	0,21	0	0	0
Entropy	6,37	6,64	7,02	7,21	7,42	6,43	6,49	6,68	7,05	7,15	0	0	0
GLDS
Homogeneity	0,21	0,21	0,22	0,22	0,23	0,21	0,21	0,22	0,22	0,22	0	0	0
Contrast	27,81	28,98	30,4	31,04	32,55	26,92	27,91	29,12	30,7	31,34	0	0	0
Energy	0,1	0,1	0,1	0,1	0,11	0,1	0,1	0,1	0,1	0,1	0	0	0
Entropy	2,44	2,45	2,47	2,48	2,48	2,43	2,44	2,46	2,49	2,5	0	0	0
Mean	4,12	4,16	4,27	4,31	4,35	4,09	4,16	4,26	4,37	4,41	0	0	0

ISSN: 1475-925X