Chaotic Lightweight Cryptosystem for Image Encryption

Table 1

Statistical analysis for different groups of images.

Image type	Image name	Size	NPCR	UACI	PSNR	MSE	Entropy
Miscellaneous	Lena	128 × 128	0.9953	0.2651	9.8189	6.7793 × 10^3	7.9642
		256 × 256	0.9937	0.2075	11.8325	4.2642 × 10^3	7.4077
		512 × 512	0.9954	0.2651	9.808	6.73964 × 10^3	7.9762
	Baboon	128 × 128	0.9954	0.241	10.6388	5.6131 × 10^0	7.9375
		256 × 256	0.9949	0.2377	10.747	5.4750 × 10^3	7.9434
		512 × 512	0.9949	0.2389	10.7089	5.5232 × 10^3	7.9472
Medical image	Chest X-ray	128 × 128	0.9967	0.3419	7.5785	1.1356 × 10^4	7.9851
		256 × 256	0.9959	0.3435	7.5195	1.1511 × 10^4	7.9920
		512 × 512	0.9962	0.3442	7.4964	1.1573 × 10^4	7.4964
	ECG signal	128 × 128	0.9966	0.353	7.377	1.1896 × 10^4	7.9370
		256 × 256	0.9957	0.3516	7.3883	1.1864 × 10^4	7.9438
		512 × 512	0.9957	0.3533	7.3498	1.1970 × 10^4	7.9480
Underwater image	Fish species	128 × 128	0.9965	0.3379	7.7698	1.0867 × 10^4	7.9753
		256 × 256	0.9962	0.3371	7.7796	1.0842 × 10^4	7.9852
		512 × 512	0.9963	0.3393	7.7255	1.0978 × 10^4	7.9882
	Marine animal	128 × 128	0.9899	0.1587	14.1337	2.5102 × 10^3	6.9153
		256 × 256	0.9957	0.2786	9.416	7.4385 × 10^3	7.9692
		512 × 512	0.9961	0.2789	9.4126	7.4443 × 10^3	7.9725
Texture	Straw	128 × 128	0.9953	0.2555	10.2246	6.1748 × 10^3	7.9426
		256 × 256	0.9961	0.2651	9.8573	6.7197 × 10^3	7.9628
		512 × 512	0.9956	0.2741	9.5634	7.1903 × 10^3	7.9739
	Grass	128 × 128	0.9952	0.2433	10.5522	5.7262 × 10^3	7.9419
		256 × 256	0.994	0.2065	0.994	4.3034 × 10^3	7.5377
		512 × 512	0.9958	0.2789	9.3568	7.5405 × 10^3	7.9827