DWT versus WP Based Optical Color Image Encryption Robust to Composite Attacks

Table 2

Performance metrics for DWT versus WP based proposed techniques without using filters.

Technique	Performance metrics
	Entropy of DI	Elapsed time (Sec)		MSE	NMSE	PSNR (dB)	UACI	NPCR
Traditional FFT	7.2628	0.5007	0.1557	15828	1	6.1365	28.317	0.00074
Traditional DCT	7.2638	0.7704	0.1545	15819	0.999	6.1391	28.221	0.00074
Modified DWT	5.9133	0.6259	0.4341	10495	0.663	7.9209	5.6079	0.00074
First proposed	5.9132	0.4907	0.4365	10446	0.660	7.9412	5.5848	0.00074
Second proposed	5.5161	0.7326	0.4526	10070	0.636	8.1005	0.8016	0.00074
Third proposed	5.5167	0.9310	0.4509	10101	0.638	8.0871	0.8815	0.00074
Fourth proposed	5.9201	1.9768	0.4354	10456	0.661	7.9370	5.5808	0.00074
Fifth proposed	5.5170	2.5886	0.4510	10098	0.638	8.0884	0.8421	0.00074
Sixth proposed	5.5175	11.975	0.4506	10104	0.638	8.0860	0.8273	0.00074