Separable and Error-Free Reversible Data Hiding in Encrypted Image with High Payload

Table 2

Comparison of performance in the three aspects of Payload, PSNR and Error rate (ER) between different approaches on Lena.

	Block Size
	4×4				8×8
	Payload (bits)	PSNRdec (dB)	PSNRrec (dB)	Error rate (%)	Payload (bits)	PSNRdec (dB)	PSNRrec (dB)	Error rate (%)
[13]	16384	37.93	43.49	15.26	4096	37.93	54.80	1.10
[14]	16384	37.94	51.91	4.74	4096	37.93	59.02	0.42
Proposed	33910	50.51	+∞	0	29870	50.07	+∞	0