Medical Image Visual Appearance Improvement Using Bihistogram Bezier Curve Contrast Enhancement: Data from the Osteoarthritis Initiative

Table 4

Categorization of contrast enhancement methods into homogenous subset using the Duncan test for EME.

Method	𝑁	Subset for alpha = 0.05
		1	2	3	4	5
BBCCE	20	41.44
RMSHE	20		43.33
BBHE	20			45.70
DSIHE	20				47.01
THE	20				47.62
RSIHE	20					54.74
Sig.		1.00	1.00	1.00	0.28	1.00

Means for groups in homogeneous subsets are displayed.
Harmonic Mean Sample Size = 20.000.