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some improvements on tutorials

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This commit is contained in:
Suleyman TURKMEN
2017-07-26 08:39:53 +03:00
parent 8e6e05ed3f
commit 89480801b8
41 changed files with 261 additions and 188 deletions
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samples/cpp/tutorial_code/HighGUI/BasicLinearTransformsTrackbar.cpp
+9 -4
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@@ -40,10 +40,15 @@ static void on_trackbar( int, void* )
* @function main
* @brief Main function
*/
int main( int, char** argv )
int main( int argc, char** argv )
{
/// Read image given by user
image = imread( argv[1] );
String imageName("../data/lena.jpg"); // by default
if (argc > 1)
{
imageName = argv[1];
}
image = imread( imageName );
/// Initialize values
alpha = 1;
@@ -54,8 +59,8 @@ int main( int, char** argv )
namedWindow("New Image", 1);
/// Create Trackbars
createTrackbar( "Contrast Trackbar", "New Image", &alpha, alpha_max, on_trackbar );
createTrackbar( "Brightness Trackbar", "New Image", &beta, beta_max, on_trackbar );
createTrackbar( "Contrast", "New Image", &alpha, alpha_max, on_trackbar );
createTrackbar( "Brightness", "New Image", &beta, beta_max, on_trackbar );
/// Show some stuff
imshow("Original Image", image);