saliency sample added

modules/saliency/samples/computeSaliency.cpp

@@ -0,0 +1,84 @@
+#include <opencv2/core/utility.hpp>
+#include <opencv2/saliency.hpp>
+#include <opencv2/highgui.hpp>
+#include <iostream>
+
+using namespace std;
+using namespace cv;
+
+static const char* keys =
+{ "{@saliency_algorithm | | Saliency algorithm <saliencyAlgorithmType.[saliencyAlgorithmTypeSubType]> }"
+    "{@video_name      | | video name            }"
+    "{@start_frame     |1| Start frame           }" };
+
+static void help()
+{
+  cout << "\nThis example shows the functionality of \"Saliency \""
+       "Call:\n"
+       "./example_saliency_computeSaliency <saliencyAlgorithmType.[saliencyAlgorithmTypeSubType]> <video_name> <start_frame> \n"
+       << endl;
+}
+
+int main( int argc, char** argv )
+{
+  CommandLineParser parser( argc, argv, keys );
+
+  String saliency_algorithm = parser.get<String>( 0 );
+  String video_name = parser.get<String>( 1 );
+  int start_frame = parser.get<int>( 2 );
+
+  if( saliency_algorithm.empty() || video_name.empty() )
+  {
+    help();
+    return -1;
+  }
+
+  //open the capture
+  VideoCapture cap;
+  cap.open( video_name );
+  cap.set( CAP_PROP_POS_FRAMES, start_frame );
+
+  if( !cap.isOpened() )
+  {
+    help();
+    cout << "***Could not initialize capturing...***\n";
+    cout << "Current parameter's value: \n";
+    parser.printMessage();
+    return -1;
+  }
+
+  Mat frame;
+
+  //instantiates the specific Saliency
+  Ptr<Saliency> saliencyAlgorithm = Saliency::create( saliency_algorithm );
+
+  if( saliencyAlgorithm == NULL )
+  {
+    cout << "***Error in the instantiation of the saliency algorithm...***\n";
+    return -1;
+  }
+
+  Mat image, saliencyMap, binaryMap;
+
+  cap >> frame;
+  if( frame.empty() )
+  {
+    return 0;
+  }
+
+  frame.copyTo( image );
+
+  if( saliencyAlgorithm->computeSaliency( image, saliencyMap ) )
+  {
+    StaticSaliencySpectralResidual spec;
+    spec.computeBinaryMap( saliencyMap, binaryMap );
+    //saliencyAlgorithm->computeBinaryMap( saliencyMap, binaryMap );
+    imshow( "Saliency Map", saliencyMap );
+    imshow( "Original Image", image );
+    imshow( "Binary Map", binaryMap );
+    waitKey( 0 );
+
+  }
+
+  return 0;
+}