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/**
* @file Morphology_2.cpp
* @brief Advanced morphology Transformations sample code
* @author OpenCV team
*/
#include "opencv2/imgproc.hpp"
#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui.hpp"
#include <iostream>
using namespace cv;
/// Global variables
Mat src, dst;
int morph_elem = 0;
int morph_size = 0;
int morph_operator = 0;
int const max_operator = 4;
int const max_elem = 2;
int const max_kernel_size = 21;
const char* window_name = "Morphology Transformations Demo";
/** Function Headers */
void Morphology_Operations( int, void* );
/**
* @function main
*/
int main( int argc, char** argv )
{
//![load]
CommandLineParser parser( argc, argv, "{@input | ../data/LinuxLogo.jpg | input image}" );
src = imread( parser.get<String>( "@input" ), IMREAD_COLOR );
if (src.empty())
{
std::cout << "Could not open or find the image!\n" << std::endl;
std::cout << "Usage: " << argv[0] << " <Input image>" << std::endl;
return -1;
}
//![load]
//![window]
namedWindow( window_name, WINDOW_AUTOSIZE ); // Create window
//![window]
//![create_trackbar1]
/// Create Trackbar to select Morphology operation
createTrackbar("Operator:\n 0: Opening - 1: Closing \n 2: Gradient - 3: Top Hat \n 4: Black Hat", window_name, &morph_operator, max_operator, Morphology_Operations );
//![create_trackbar1]
//![create_trackbar2]
/// Create Trackbar to select kernel type
createTrackbar( "Element:\n 0: Rect - 1: Cross - 2: Ellipse", window_name,
&morph_elem, max_elem,
Morphology_Operations );
//![create_trackbar2]
//![create_trackbar3]
/// Create Trackbar to choose kernel size
createTrackbar( "Kernel size:\n 2n +1", window_name,
&morph_size, max_kernel_size,
Morphology_Operations );
//![create_trackbar3]
/// Default start
Morphology_Operations( 0, 0 );
waitKey(0);
return 0;
}
//![morphology_operations]
/**
* @function Morphology_Operations
*/
void Morphology_Operations( int, void* )
{
// Since MORPH_X : 2,3,4,5 and 6
//![operation]
int operation = morph_operator + 2;
//![operation]
Mat element = getStructuringElement( morph_elem, Size( 2*morph_size + 1, 2*morph_size+1 ), Point( morph_size, morph_size ) );
/// Apply the specified morphology operation
morphologyEx( src, dst, operation, element );
imshow( window_name, dst );
}
//![morphology_operations]