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

Table 4

Results of proposed variant 1: five 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	41.14	2379222	0.999	3.03	0	39.58	2451046	0.999	3.12	0
Baboon	34.35	2496404	0.996	3.17	0	31.72	2816768	0.993	3.58	0
Tiffany	37.27	2376135	0.996	3.02	0	35.74	2432745	0.995	3.09	0
Peppers	35.56	2379292	0.998	3.03	0	35.45	2459762	0.998	3.13	0
Jet	39.57	2384676	0.998	3.03	0	39.73	2454060	0.998	3.12	0
Boat	35.84	2409235	0.998	3.06	0	34.16	2565007	0.997	3.26	0
House	36.9	2404582	0.998	3.06	0	36.46	2533362	0.997	3.22	0
Pot	40.35	2369274	0.999	3.01	0	36.96	2399556	0.999	3.05	0
Average	37.62	2399853	0.998	3.05	0	36.23	2514038	0.997	3.20	0