Image Encryption Algorithm Based on Chaotic Maps : Logistics Maps

Logistics Maps is Logistic map is one of the simplest chaotic maps
Y(n+1)=aYn(1-Yn)
where a is the function seed and yn is the current value of the mapping in time with an initial value y0
Logistic Maps is robust method for process the image encryption.
We show process the image encryption, Okay
1. original image with  size 117x203, so iteration  is 23751 times
initial setting
a=0.7;
y=3.71238;

2. next step calculate Yn, You can see below

3. finally, you can get original image if you know initial value of a and y0