Fragile watermarking based on incomplete cryptography for copyright protection

Applied Informatics

Table 5 PSNR [dB] and embedded bits (quantization table)

Method	Image	P	C	P ^′	Emb. [bit]
WQTB	Title	31.84	13.18	28.99	416
	Lenna	32.37	17.49	31.72	416
	Girl	32.71	17.98	32.48	416
	Airplane	30.20	14.95	29.66	416
	Parrots	34.25	17.34	33.64	416
	Couple	34.06	19.78	33.76	416
	Milkdrop	31.94	27.36	31.88	1024
	Mandrill	24.96	23.57	24.95	1024
	Lighthouse	32.67	16.45	31.52	416
	Pepper	28.81	17.08	28.52	416
	Party	35.16	27.85	35.05	49152
	Picnic	34.39	27.61	34.28	49152
	Portrait	35.99	27.58	35.86	49152
AQTB	Title	31.84	15.52	31.84	512
	Lenna	32.37	14.85	32.37	416
	Girl	32.71	23.10	32.71	424
	Airplane	30.20	19.61	30.20	336
	Parrots	34.25	20.31	34.25	344
	Couple	34.06	23.54	34.06	464
	Milkdrop	31.94	27.51	31.81	512
	Mandrill	24.96	21.03	24.93	512
	Lighthouse	32.67	18.27	32.67	512
	Pepper	28.81	17.40	28.81	344
	Party	35.16	16.87	34.91	24576
	Picnic	34.39	20.39	34.17	24576
	Portrait	35.99	15.47	35.69	24576