Progressive sharing of multiple images with sensitivity-controlled decoding

EURASIP Journal on Advances in Signal Processing

Table 5 Image quality of method 3 (the secret images are recovered in three levels)

Secret images	The ( *r, n* ) in sharing	Low-level recovery		Moderate-level recovery		High-level recovery	Stego images	Quality of stegos
Secret images	The ( *r, n* ) in sharing	PSNR	MSE	PSNR	MSE	High-level recovery	Stego images	PSNR	MSE
House	(4, 6)	29.89	66.69	35.72	17.42	Lossless	Barbara	40.14	6.30
Cameraman	(5, 6)	N/A	N/A	29.19	78.36	Lossless	Lake	41.56	4.54
Lena	(5, 6)	N/A	N/A	31.22	49.10	Lossless	Couple	41.16	4.98
Pepper	(6, 6)	N/A	N/A	N/A	N/A	Lossless	Baboon	41.29	4.83
Jet	(6, 6)	N/A	N/A	N/A	N/A	Lossless	Indian	41.47	4.64
Blonde	(6, 6)	N/A	N/A	N/A	N/A	Lossless	Bridge	40.17	6.25