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

Table 6

Results of existing techniques [12, 13, 19].

Images 512 × 512 × 3	LSB + 3PVD technique [12]				LSB + 5PVD technique [13]				7 way PVD [19]
	Type 1		Type 2		Type 1		Type 2
	PSNR	Capacity	PSNR	Capacity	PSNR	Capacity	PSNR	Capacity	PSNR	Capacity
Lena	42.22	2361875	40.83	2437700	41.84	2362944	39.98	2451046	40.81	1896662
Baboon	34.66	2393475	32.34	2772545	34.32	2396696	31.99	2816768	33.28	2226806
Tiffany	42.02	2363192	41.50	2425193	40.59	2363455	40.37	2432745	40.38	1400756
Peppers	39.27	2364428	38.04	2447737	38.16	2365366	36.50	2459762	39.63	1778072
Jet	41.81	2365839	41.90	2443492	41.26	2366486	40.62	2454060	40.36	1906254
Boat	38.04	2370147	36.13	2539530	37.10	2372127	34.76	2565007	37.14	1972086
House	39.66	2366686	38.73	2510373	38.59	2368303	37.51	2533362	37.83	1972223
Pot	42.39	2364360	41.17	2394782	40.26	2364549	36.95	2399556	41.81	1795551
Average	40.01	2368750	38.83	2496419	39.02	2369991	37.34	2514038	38.91	1868551