Image Enhancement via Subimage Histogram Equalization Based on Mean and Variance

Table 2

PSNR calculated for the test images.

Image name	DSIHE	RMSHE	MMBEBHE	RSIHE	ESIHE	BHEMHB	Proposed
F16	20.9870	21.8760	24.4849	22.1130	22.8690	23.9420	27.0944
Bridge	24.2212	22.9133	23.5086	24.3100	28.4320	26.7650	31.4561
Couple	19.7178	18.3277	21.0514	20.5600	21.6780	20.4635	22.6008
Fish	20.1459	19.7673	22.0862	24.9780	25.4060	26.4010	28.2385
Lena	23.5663	22.1785	22.7730	24.8000	25.7990	26.5950	29.3948
Plane	28.7635	27.6540	28.3268	17.3390	18.2420	20.6130	30.3730