New Framework of Self-Embedding Fragile Watermarking Based on Reference Sharing Mechanism

Table 7

Comparison of PSNR of recovered content with respect to original content under different tampering rates with DCT-based schemes.

Tampering rate (%)	Lena			Baboon
	[34]	[35]	Proposed (dB)	[34]	[35]	Proposed (dB)
25	39.50 dB	39.69	39.46	36.06 dB	31.24	39.20
50	35.79 dB	29.82	32.71	33.16 dB	26.35	26.55
80	—	24.18	29.04	—	21.89	21.77