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/**
* @function EqualizeHist_Demo.cpp
* @brief Demo code for equalizeHist function
* @author OpenCV team
*/
#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc.hpp"
#include <iostream>
using namespace cv;
using namespace std;
/**
* @function main
*/
int main( int argc, char** argv )
{
//! [Load image]
CommandLineParser parser( argc, argv, "{@input | lena.jpg | input image}" );
Mat src = imread( samples::findFile( 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;
}
//! [Load image]
//! [Convert to grayscale]
cvtColor( src, src, COLOR_BGR2GRAY );
//! [Convert to grayscale]
//! [Apply Histogram Equalization]
Mat dst;
equalizeHist( src, dst );
//! [Apply Histogram Equalization]
//! [Display results]
imshow( "Source image", src );
imshow( "Equalized Image", dst );
//! [Display results]
//! [Wait until user exits the program]
waitKey();
//! [Wait until user exits the program]
return 0;
}
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