High Capacity Image Steganography Using Modified LSB Substitution and PVD against Pixel Difference Histogram Analysis

Table 5

Results of proposed variant 2: eight directional PVD with M-LSB substitution.

Images 512 × 512 × 3	Type 1					Type 2
	PSNR	Capacity	Q	bit rate	FOBP	PSNR	Capacity	Q	bit rate	FOBP
Lena	41.04	2371255	0.999	3.02	0	39.38	2533551	0.999	3.22	0
Baboon	33.76	2502616	0.996	3.18	0	31.23	2939376	0.992	3.74	0
Tiffany	37.2	2366437	0.996	3.01	0	34.71	2511139	0.994	3.19	0
Peppers	35.15	2371837	0.998	3.02	0	34.1	2544392	0.997	3.24	0
Jet	39.52	2377031	0.998	3.02	0	39.2	2538801	0.998	3.23	0
Boat	35.32	2405009	0.998	3.06	0	33.17	2659795	0.997	3.38	0
House	37.58	2399229	0.998	3.05	0	36.66	2625804	0.998	3.34	0
Pot	40.34	2359271	0.999	3.00	0	36.33	2475977	0.999	3.15	0
Average	37.49	2394086	0.998	3.04	0	35.60	2603604	0.997	3.31	0