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 3 Comparison of PSNR and SSIM for our schemes on Lena image

Scheme	Payload	Payload	Payload	Payload	Payload
	= 36,700	= 123,208	= 170,394	191,365	= 201,851
	PSNR	PSNR	PSNR	PSNR	PSNR
	SSIM	SSIM	SSIM	SSIM	SSIM
Proposed	50.99	42.73	40.31	39.51	38.86
	0.9846	0.9308	0.9038	0.8887	0.8836
Proposed (sort)	51.03	42.85	40.51	39.59	38.99
	0.9912	0.9321	0.9045	0.8953	0.8874
Proposed (selection)	51.74	43.12	40.70	39.58	39.10
	0.9912	0.9330	0.9064	0.8959	0.8885
Difference	+ 0.75	+ 0.39	+ 0.39	+ 0.07	+ 0.24
	+ 0.0066	+ 0.0022	+ 0.0026	+ 0.0072	+ 0.0049