Quadrant Dynamic with Automatic Plateau Limit Histogram Equalization for Image Enhancement

Table 3

Peak signal to noise ratio (PSNR).

Images	HE	BBHE	DSIHE	MMBEBHE	RMSHE ()	BPDHE	BHEPL	QDAPLHE
Einstein	15.27	15.19	15.53	18.97	19.52	27.52	30.57	32.59
Girl	13.05	13.3	13.04	14.25	27.98	33.74	34.92	35.37
House	10.81	14.26	13.92	21.45	21.32	24.63	28.64	31.49
Couple	7.56	13.16	11.64	19.56	19.64	29.34	38.24	42.34
Copter	10.62	15.96	14.25	25.43	25.67	27.65	32.98	33.54
F16	11.94	20.67	16.05	20.37	22.78	32.19	39.79	41.22
Jet	9.52	22.53	14.38	30.72	27.82	24.25	28.73	33.48
CT chest	14.35	19.53	15.37	29.73	33.46	31.26	34.29	36.24
CT brain	17.35	24.61	19.73	25.37	34.61	37.86	39.37	41.27
CT abdomen	16.54	23.25	18.16	23.45	31.23	32.74	33.78	37.19
Average	12.74	18.25	15.20	20.39	26.40	30.12	34.13	36.47