1- #include < stdio .h>
1+ #include < bits/stdc++ .h>
22#include < opencv2/opencv.hpp>
33
44using namespace cv ;
55using namespace std ;
66
77const int MAX=1e4 +79 ;
88
9+ /* *
10+ u is the control parameter for logistic chaotic map,also known as population rate
11+ Here u is taken 3.94
12+ x is the vector that contain the value generated by chaotic map
13+ The initial value of the logistic chaotic map is 0.4
14+ */
15+ 916int main ()
1017{
11- Mat image;
12- double x[102 ];
13- double u; // u is the control parameter for chaotic map,also known as population rate
14- 15- image = imread ( " encryptedImage.jpg" 1 );
16- if ( !image.data )
17- {
18- cout<<" No image data \n "
19- return -1 ;
18+ Mat image;
19+ int i,l;
20+ double u=3.94 ;
21+ vector<pair<double ,int >> x;
22+ Vec<unsigned char , 3 > pixel;
23+ 24+ image = imread (" Image/encrypted_image.jpg" 0 );
25+ if ( !image.data )
26+ {
27+ cout<<" No image data \n "
28+ return -1 ;
29+ }
30+ 31+ x.push_back ({0.4 ,0 });
32+ 33+ 34+ double temp;
35+ for (int i = 1 ; i <= 511 ; ++i){
36+ temp=u*x[i-1 ].first *(1 -x[i-1 ].first );
37+ x.push_back ({temp,i});
38+ }
39+ 40+ sort (x.begin (), x.end ());
41+ 42+ imshow (" Decrepted image"
43+ waitKey (0 );
44+ 45+ i=1 ;
46+ for (int r = 0 ; r < image.rows ; ++r) {
47+ for (int c = 0 ; c < image.cols ; ++c) {
48+ if (i>100 ){
49+ i=1 ;
50+ }
51+ l=x[i].first *MAX;
52+ l=l%255 ;
53+ image.at <Vec3b>(r,c)[0 ]=image.at <Vec3b>(r,c)[0 ]^l;
54+ image.at <Vec3b>(r,c)[1 ]=image.at <Vec3b>(r,c)[1 ]^l;
55+ image.at <Vec3b>(r,c)[2 ]=image.at <Vec3b>(r,c)[2 ]^l;
56+ i++;
2057 }
21- // Applying Logistic map
22- u=3.94 ; // It is the condition for logistic map
23- x[0 ]=0.4 ; // Base condition for logistic map
24- for (int i = 1 ; i <= 100 ; ++i)
25- x[i]=u*x[i-1 ]*(1 -x[i-1 ]);
26- sort (x,x+100 );
27- 28- // reading image pixel
29- int i=1 ;
30- int l;
31- 32- for (int r = 0 ; r < image.rows ; ++r) {
33- for (int c = 0 ; c < image.cols ; ++c) {
34- if (i>100 ){
35- i=1 ;
36- }
37- l=x[i]*MAX;
38- l=l%255 ;
39- // cout << "Pixel at position (x, y) : (" << c << ", " << r << ") =";
40- image.at <Vec3b>(r,c)[0 ]=image.at <Vec3b>(r,c)[0 ]^l;
41- image.at <Vec3b>(r,c)[1 ]=image.at <Vec3b>(r,c)[1 ]^l;
42- image.at <Vec3b>(r,c)[2 ]=image.at <Vec3b>(r,c)[2 ]^l;
43- i++;
44- }
45- }
46- namedWindow (" Shubham@shaurya"
47- imshow (" Shubham@shaurya"
48- waitKey (0 );
49- 50- return 0 ;
58+ }
59+ 60+ i=511 ;
61+ for (int r = image.rows -1 ; r >= 0 ; --r) {
62+ for (int c = image.cols -1 ; c >= 0 ; --c) {
63+ if (i<0 )
64+ i=511 ;
65+ int temps= x[i].second ;
66+ 67+ pixel= image.at <Vec3b>(r,temps);
68+ image.at <Vec3b>(r,temps)=image.at <Vec3b>(r,c);
69+ image.at <Vec3b>(r,c)=pixel;
70+ 71+ i--;
72+ }
73+ }
74+ 75+ namedWindow (" Original_image"
76+ imshow (" Original_image"
77+ waitKey (0 );
78+ 79+ return 0 ;
80+ 5181}
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