Comparison of the Manual, Semiautomatic, and Automatic Selection and Leveling of Hot Spots in Whole Slide Images for Ki-67 Quantification in Meningiomas

Table 2

Significant texture features (features in 8 color channels or sum of channels (a), color channels or sum of channels in features (b)).

(a)

Color component	R; (1–8)	G; (9–16)	B; (17–24)	u (luv) + C (CMYK); (25–32)	C; (33–40)	M; (41–48)	Y; (49–56)	K; (57–64)
Number of features	3, 5	11, 13	—	25, 26, 27, 29, 30, 32	33, 34, 35, 37, 38, 40	41, 42, 43, 45, 46, 48	49, 54	63
Feature name	(i) Energy; (ii) Contrast	(i) Energy; (ii) Contrast		(i) PSM; (ii) Variance; (iii) Energy; (iv) Contrast; (v) Homogeneity; (vi) Cluster prominence	(i) PSM; (ii) Variance; (iii) Energy; (iv) Contrast; (v) Homogeneity; (vi) Cluster prominence	(i) PSM; (ii) Variance; (iii) Energy; (iv) Contrast; (v) Homogeneity; (vi) Cluster prominence	(i) PSM; (ii) Homogeneity	Cluster shade

(b)

1	2	3	4	5	6	7	8
PSM	Variance	Energy	Correlation	Contrast	Homogeneity	Cluster shade	Cluster prominence
(u + C), C, M, Y	(u + C), C, M	R, G, (u + C), C, M	—	R, G, (u + C), C, M	(u + C), C, M, Y	K	(u + C), C, M