Update samples (#10333)

* Update samples

* Update calib3d.hpp

* Update calib3d.hpp

* Update calib3d.hpp

* Update calib3d.hpp

samples/cpp/tutorial_code/ImgProc/Morphology_1.cpp

@@ -5,10 +5,11 @@
  */
 
 #include "opencv2/imgproc.hpp"
-#include "opencv2/imgcodecs.hpp"
 #include "opencv2/highgui.hpp"
+#include <iostream>
 
 using namespace cv;
+using namespace std;
 
 /// Global variables
 Mat src, erosion_dst, dilation_dst;
@@ -27,13 +28,17 @@ void Dilation( int, void* );
 /**
  * @function main
  */
-int main( int, char** argv )
+int main( int argc, char** argv )
 {
   /// Load an image
-  src = imread( argv[1], IMREAD_COLOR );
-
+  CommandLineParser parser( argc, argv, "{@input | ../data/chicky_512.png | input image}" );
+  src = imread( parser.get<String>( "@input" ), IMREAD_COLOR );
   if( src.empty() )
-    { return -1; }
+  {
+    cout << "Could not open or find the image!\n" << endl;
+    cout << "Usage: " << argv[0] << " <Input image>" << endl;
+    return -1;
+  }
 
   /// Create windows
   namedWindow( "Erosion Demo", WINDOW_AUTOSIZE );

samples/cpp/tutorial_code/ImgProc/Morphology_2.cpp

@@ -7,6 +7,7 @@
 #include "opencv2/imgproc.hpp"
 #include "opencv2/imgcodecs.hpp"
 #include "opencv2/highgui.hpp"
+#include <iostream>
 
 using namespace cv;
 
@@ -32,15 +33,14 @@ void Morphology_Operations( int, void* );
 int main( int argc, char** argv )
 {
   //![load]
-  String imageName("../data/baboon.jpg"); // by default
-  if (argc > 1)
+  CommandLineParser parser( argc, argv, "{@input | ../data/baboon.jpg | input image}" );
+  src = imread( parser.get<String>( "@input" ), IMREAD_COLOR );
+  if (src.empty())
   {
-  imageName = argv[1];
+    std::cout << "Could not open or find the image!\n" << std::endl;
+    std::cout << "Usage: " << argv[0] << " <Input image>" << std::endl;
+    return -1;
   }
-  src = imread(imageName, IMREAD_COLOR); // Load an image
-
-  if( src.empty() )
-    { return -1; }
   //![load]
 
   //![window]

samples/cpp/tutorial_code/ImgProc/morph_lines_detection/Morphology_3.cpp

@@ -11,16 +11,15 @@ void show_wait_destroy(const char* winname, cv::Mat img);
 using namespace std;
 using namespace cv;
 
-int main(int, char** argv)
+int main(int argc, char** argv)
 {
     //! [load_image]
-    // Load the image
-    Mat src = imread(argv[1]);
-
-    // Check if image is loaded fine
-    if(src.empty()){
-        printf(" Error opening image\n");
-        printf(" Program Arguments: [image_path]\n");
+    CommandLineParser parser(argc, argv, "{@input | ../data/notes.png | input image}");
+    Mat src = imread(parser.get<String>("@input"), IMREAD_COLOR);
+    if (src.empty())
+    {
+        cout << "Could not open or find the image!\n" << endl;
+        cout << "Usage: " << argv[0] << " <Input image>" << endl;
         return -1;
     }