Secret Image Sharing Scheme with Threshold Changeable Capability

Table 1

PSNR values (dB) of the stego images tested in 12 cover images.

Cover images	PNSR of stego 1	PNSR of stego 2	PNSR of stego 3	PNSR of stego 4	PNSR of stego 5	PNSR of stego 6	Average
Airplane	41.24	39.99	40.44	39.62	38.51	40.46	40.04
Boat	41.24	39.98	40.42	39.59	38.48	40.46	40.02
Bird	41.24	39.98	40.43	39.60	38.47	40.46	40.03
Cameraman	41.19	39.93	40.37	39.55	38.41	40.41	39.98
Couple	41.26	40.01	40.46	39.64	38.52	40.49	39.97
Crowd	41.09	39.85	40.26	39.46	38.26	40.30	40.06
Fruits	41.26	40.01	40.45	39.63	38.48	40.48	40.05
House	41.29	40.17	40.68	39.87	39.53	40.73	40.38
Lake	41.25	39.98	40.43	39.62	38.49	40.48	40.04
Lena	41.23	39.97	40.42	39.60	38.47	40.45	40.02
Peppers	41.23	39.97	40.42	39.60	38.48	40.45	40.02
Tiffany	41.26	40.03	40.47	39.64	38.54	40.49	40.04