Merge pull request #1645 from krshrimali:patch-1

modules/face/samples/sampleDetectLandmarks.cpp

@@ -75,6 +75,10 @@ int main(int argc,char** argv){
     resize(img,img,Size(460,460), 0, 0, INTER_LINEAR_EXACT);
     facemark->getFaces(img,faces);
     vector< vector<Point2f> > shapes;
+
+    // Check if faces detected or not
+    // Helps in proper exception handling when writing images to the directories.
+    if(faces.size() != 0) {
         if(facemark->fit(img,faces,shapes))
         {
             for( size_t i = 0; i < faces.size(); i++ )
@@ -89,5 +93,8 @@ int main(int argc,char** argv){
             imshow("Detected_shape",img);
             waitKey(0);
         }
+    } else {
+        cout << "Faces not detected." << endl;
+    }
     return 0;
 }