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

Table 3

Performance metrics for DWT versus WP based proposed techniques after using median filter.

Technique	Performance metrics
	Entropy of DI	Elapsed time (Sec)		MSE	NMSE	PSNR (dB)	UACI	NPCR
Traditional FFT	7.2307	0.5542	0.1858	15375	0.999	6.2627	29.0707	0.00074
Traditional DCT	7.2331	0.7911	0.1846	15388	1	6.2590	29.1083	0.00074
Modified DWT	5.6448	0.6296	0.4601	10066	0.654	8.1021	5.3108	0.00074
First proposed	5.6431	0.5132	0.4602	10061	0.653	8.1043	5.2961	0.00074
Second proposed	5.5673	0.7451	0.4877	9243	0.601	8.4727	0.5308	0.00074
Third proposed	5.5654	0.9521	0.4877	9245.7	0.601	8.4714	0.5267	0.00074
Fourth proposed	5.6422	3.5743	0.4599	10071	0.654	8.0999	5.3114	0.00074
Fifth proposed	5.5663	2.5712	0.4880	9239.4	0.600	8.4744	0.5328	0.00074
Sixth proposed	5.5643	10.567	0.4876	9245.1	0.601	8.4717	0.5242	0.00074