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Table 2 Average values of Entropy, MSE, and PSNR for 300 tested underwater images

From: Underwater image quality enhancement through composition of dual-intensity images and Rayleigh-stretching

Method	Entropy	MSE	PSNR
Original image	7.001	-	-
HE	5.860	5 220	11.34
ICM	7.592	12 652	7.23
UCM	7.575	12 656	7.23
PDSCC	6.846	936	20.92
Proposed method	7.726	2 847	14.15

Note: The values in bold typeface represent the best results obtained in the comparison.

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