Merge pull request #3217 from avdmitry:samples_cpp_data

samples/cpp/tutorial_code/HighGUI/AddingImagesTrackbar.cpp

@@ -44,8 +44,8 @@ static void on_trackbar( int, void* )
 int main( void )
 {
    /// Read image ( same size, same type )
-   src1 = imread("../images/LinuxLogo.jpg");
-   src2 = imread("../images/WindowsLogo.jpg");
+   src1 = imread("../data/LinuxLogo.jpg");
+   src2 = imread("../data/WindowsLogo.jpg");
 
    if( src1.empty() ) { printf("Error loading src1 \n"); return -1; }
    if( src2.empty() ) { printf("Error loading src2 \n"); return -1; }

samples/cpp/tutorial_code/ImgProc/AddingImages.cpp

@@ -32,8 +32,8 @@ int main( void )
      { alpha = input; }
 
    /// Read image ( same size, same type )
-   src1 = imread("../images/LinuxLogo.jpg");
-   src2 = imread("../images/WindowsLogo.jpg");
+   src1 = imread("../data/LinuxLogo.jpg");
+   src2 = imread("../data/WindowsLogo.jpg");
 
    if( src1.empty() ) { std::cout<< "Error loading src1"<<std::endl; return -1; }
    if( src2.empty() ) { std::cout<< "Error loading src2"<<std::endl; return -1; }

samples/cpp/tutorial_code/ImgProc/Pyramids.cpp

@@ -32,7 +32,7 @@ int main( void )
   printf( " * [ESC] -> Close program \n \n" );
 
   /// Test image - Make sure it s divisible by 2^{n}
-  src = imread( "../images/chicky_512.png" );
+  src = imread( "../data/chicky_512.png" );
   if( src.empty() )
     { printf(" No data! -- Exiting the program \n");
       return -1; }

samples/cpp/tutorial_code/ImgProc/Smoothing.cpp

@@ -35,7 +35,7 @@ int main( void )
   namedWindow( window_name, WINDOW_AUTOSIZE );
 
   /// Load the source image
-  src = imread( "../images/lena.png", 1 );
+  src = imread( "../data/lena.jpg", 1 );
 
   if( display_caption( "Original Image" ) != 0 ) { return 0; }
 

samples/cpp/tutorial_code/core/discrete_fourier_transform/discrete_fourier_transform.cpp

@@ -14,14 +14,14 @@ static void help(char* progName)
         <<  "This program demonstrated the use of the discrete Fourier transform (DFT). " << endl
         <<  "The dft of an image is taken and it's power spectrum is displayed."          << endl
         <<  "Usage:"                                                                      << endl
-        << progName << " [image_name -- default lena.jpg] "                       << endl << endl;
+        << progName << " [image_name -- default ../data/lena.jpg] "               << endl << endl;
 }
 
 int main(int argc, char ** argv)
 {
     help(argv[0]);
 
-    const char* filename = argc >=2 ? argv[1] : "lena.jpg";
+    const char* filename = argc >=2 ? argv[1] : "../data/lena.jpg";
 
     Mat I = imread(filename, IMREAD_GRAYSCALE);
     if( I.empty())

samples/cpp/tutorial_code/core/file_input_output/file_input_output.cpp

@@ -80,7 +80,7 @@ int main(int ac, char** av)
 
         fs << "iterationNr" << 100;
         fs << "strings" << "[";                              // text - string sequence
-        fs << "image1.jpg" << "Awesomeness" << "baboon.jpg";
+        fs << "image1.jpg" << "Awesomeness" << "../data/baboon.jpg";
         fs << "]";                                           // close sequence
 
         fs << "Mapping";                              // text - mapping

samples/cpp/tutorial_code/core/interoperability_with_OpenCV_1/interoperability_with_OpenCV_1.cpp

@@ -17,7 +17,7 @@ static void help( char* progName)
         << "Also contains example for image read, spliting the planes, merging back and "  << endl
         << " color conversion, plus iterating through pixels. "                            << endl
         << "Usage:" << endl
-        << progName << " [image-name Default: lena.jpg]"                           << endl << endl;
+        << progName << " [image-name Default: ../data/lena.jpg]"                   << endl << endl;
 }
 
 // comment out the define to use only the latest C++ API
@@ -31,7 +31,7 @@ static void help( char* progName)
 int main( int argc, char** argv )
 {
     help(argv[0]);
-    const char* imagename = argc > 1 ? argv[1] : "lena.jpg";
+    const char* imagename = argc > 1 ? argv[1] : "../data/lena.jpg";
 
 #ifdef DEMO_MIXED_API_USE
     Ptr<IplImage> IplI(cvLoadImage(imagename));      // Ptr<T> is a safe ref-counting pointer class

samples/cpp/tutorial_code/core/ippasync/ippasync_sample.cpp

@@ -36,7 +36,7 @@ static void help()
 const char* keys =
 {
     "{c  camera   |           | use camera or not}"
-    "{fn file_name|baboon.jpg | image file       }"
+    "{fn file_name|../data/baboon.jpg | image file       }"
     "{a accel     |auto       | accelerator type: auto (default), cpu, gpu}"
 };
 

samples/cpp/tutorial_code/core/mat_mask_operations/mat_mask_operations.cpp

@@ -14,7 +14,7 @@ static void help(char* progName)
         <<  "This program shows how to filter images with mask: the write it yourself and the"
         << "filter2d way. " << endl
         <<  "Usage:"                                                                        << endl
-        << progName << " [image_name -- default lena.jpg] [G -- grayscale] "        << endl << endl;
+        << progName << " [image_name -- default ../data/lena.jpg] [G -- grayscale] "        << endl << endl;
 }
 
 
@@ -23,7 +23,7 @@ void Sharpen(const Mat& myImage,Mat& Result);
 int main( int argc, char* argv[])
 {
     help(argv[0]);
-    const char* filename = argc >=2 ? argv[1] : "lena.jpg";
+    const char* filename = argc >=2 ? argv[1] : "../data/lena.jpg";
 
     Mat I, J, K;
 

samples/cpp/tutorial_code/features2D/AKAZE_match.cpp

@@ -12,11 +12,11 @@ const float nn_match_ratio = 0.8f;   // Nearest neighbor matching ratio
 
 int main(void)
 {
-    Mat img1 = imread("graf1.png", IMREAD_GRAYSCALE);
-    Mat img2 = imread("graf3.png", IMREAD_GRAYSCALE);
+    Mat img1 = imread("../data/graf1.png", IMREAD_GRAYSCALE);
+    Mat img2 = imread("../data/graf3.png", IMREAD_GRAYSCALE);
 
     Mat homography;
-    FileStorage fs("H1to3p.xml", FileStorage::READ);
+    FileStorage fs("../data/H1to3p.xml", FileStorage::READ);
     fs.getFirstTopLevelNode() >> homography;
 
     vector<KeyPoint> kpts1, kpts2;

samples/cpp/tutorial_code/introduction/display_image/display_image.cpp

@@ -1,21 +1,23 @@
 #include <opencv2/core/core.hpp>
 #include <opencv2/imgcodecs.hpp>
 #include <opencv2/highgui/highgui.hpp>
+
 #include <iostream>
+#include <string>
 
 using namespace cv;
 using namespace std;
 
 int main( int argc, char** argv )
 {
-    if( argc != 2)
+    string imageName("../data/HappyFish.jpg"); // by default
+    if( argc > 1)
     {
-     cout <<" Usage: display_image ImageToLoadAndDisplay" << endl;
-     return -1;
+        imageName = argv[1];
     }
 
     Mat image;
-    image = imread(argv[1], IMREAD_COLOR); // Read the file
+    image = imread(imageName.c_str(), IMREAD_COLOR); // Read the file
 
     if( image.empty() )                      // Check for invalid input
     {