A high capacity reversible data hiding through multi-directional gradient prediction, non-linear regression analysis and embedding selection

EURASIP Journal on Image and Video Processing

Table 4 Comparison of PSNR and SSIM for our schemes on Boat image

Scheme	Payload	Payload	Payload	Payload	Payload
	= 15,729	= 57,672	= 99,615	133,693	= 159,908
	PSNR	PSNR	PSNR	PSNR	PSNR
	SSIM	SSIM	SSIM	SSIM	SSIM
Proposed	52.39	44.99	40.56	38.33	36.82
	0.9929	0.9768	0.9461	0.9189	0.9027
Proposed (sort)	52.51	45.16	40.85	38.40	36.95
	0.9942	0.9771	0.9480	0.9255	0.9087
Proposed (selection)	53.97	45.37	41.12	38.42	36.98
	0.9960	0.9776	0.9484	0.9268	0.9095
Difference	+ 1.58	+ 0.38	+ 0.56	+ 0.09	+ 0.16
	+ 0.0031	+ 0.0008	+ 0.0023	+ 0.0079	+ 0.0068