added LogPolar Blind Spot Model (thanks to Fabio Solari for the contribution)

2012-03-18 22:29:13 +00:00
parent d10616775b
commit c8e206c2ab
3 changed files with 944 additions and 4 deletions
--- a/samples/cpp/logpolar_bsm.cpp
+++ b/samples/cpp/logpolar_bsm.cpp
@@ -0,0 +1,82 @@
+/*Authors
+* Manuela Chessa, Fabio Solari, Fabio Tatti, Silvio P. Sabatini
+*
+* manuela.chessa@unige.it, fabio.solari@unige.it
+*
+* PSPC-lab - University of Genoa
+*/
+
+#include "opencv2/opencv.hpp"
+#include <iostream>
+#include <cmath>
+
+using namespace cv;
+using namespace std;
+
+void help()
+{
+    cout << "LogPolar Blind Spot Model sample.\nShortcuts:"
+        "\n\tn for nearest pixel technique"
+        "\n\tb for bilinear interpolation technique"
+        "\n\to for overlapping circular receptive fields"
+        "\n\ta for adjacent receptive fields"
+        "\n\tq or ESC quit\n";
+}
+    
+int main(int argc, char** argv)
+{
+    Mat img = imread(argc > 1 ? argv[1] : "lena.jpg",1); // open the image
+    if(img.empty()) // check if we succeeded
+    {
+        cout << "can not load image\n";
+        return 0;
+    }
+    help();
+    
+    Size s=img.size();
+    int w=s.width, h=s.height;
+    int ro0=3; //radius of the blind spot
+    int R=120;  //number of rings   
+    
+    //Creation of the four different objects that implement the four log-polar transformations
+    //Off-line computation
+    Point2i center(w/2,h/2);
+    LogPolar_Interp nearest(w, h, center, R, ro0, INTER_NEAREST);
+    LogPolar_Interp bilin(w,h, center,R,ro0);
+    LogPolar_Overlapping overlap(w,h,center,R,ro0);
+    LogPolar_Adjacent adj(w,h,center,R,ro0,0.25);
+
+    namedWindow("Cartesian",1);
+    namedWindow("retinal",1);
+    namedWindow("cortical",1);
+    int wk='n';
+    Mat Cortical, Retinal;
+
+    //On-line computation
+    for(;;)
+    {
+        if(wk=='n'){
+            Cortical=nearest.to_cortical(img);
+            Retinal=nearest.to_cartesian(Cortical);
+        }else if (wk=='b'){
+            Cortical=bilin.to_cortical(img);
+            Retinal=bilin.to_cartesian(Cortical);           
+        }else if (wk=='o'){
+            Cortical=overlap.to_cortical(img);
+            Retinal=overlap.to_cartesian(Cortical);         
+        }else if (wk=='a'){
+            Cortical=adj.to_cortical(img);
+            Retinal=adj.to_cartesian(Cortical); 
+        }
+
+        imshow("Cartesian", img);
+        imshow("cortical", Cortical);
+        imshow("retinal", Retinal);
+
+        int c=waitKey(15);
+        if (c>0) wk=c;
+        if(wk =='q' || (wk & 255) == 27) break;
+    }
+
+    return 0;
+}