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

Table 1

Mean EME, AMBE, and FSIM values computed from THE, BBHE, DSIHE, RMSHE, RSIHE, and BBCCE by taking original image’s EME (32.38) and AMBE (0.00) as reference. FSIM ranged from 0 to 1, where 1 indicates the best enhanced image quality.

Methods	Mean EME±SD	95% confidence interval of the difference		Mean AMBE ± SD	95% confidence interval of the difference		Mean FSIM ± SD	95% confidence interval of the difference
		Lower	Upper		Lower	Upper		Lower	Upper
THE	47.62±2.05	46.66	48.58	77.39±4.99	75.05	79.73	0.72±0.02	0.71	0.74
BBHE	45.70±1.92	44.79	46.60	27.35±2.61	26.13	28.57	0.79±0.03	0.78	0.81
DSIHE	47.01±1.81	46.16	47.86	35.80±2.34	34.71	36.90	0.77±0.03	0.76	0.79
RMSHE	43.33±1.80	42.48	44.17	14.0±1.29	13.42	14.63	0.83±0.03	0.82	0.85
RSIHE	54.74±1.88	53.86	55.62	17.40±1.19	16.84	17.96	0.82±0.03	0.81	0.83
BBCCE	41.44±1.06	40.94	41.93	14.82±1.47	14.13	15.51	0.92±0.02	0.91	0.93