Opencv图片锐化

• 代码

#include <iostream>
#include "opencv2/core.hpp"
#include "opencv2/imgcodecs.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"

using namespace cv;
using namespace std;

static int mask( int argc, char* argv[])
{
    
    
    Mat src, dst;

    src = imread("./data/lena.jpg", IMREAD_COLOR);

    if (src.empty())
    {
    
    
        cerr << "Can't open image" << endl;
        return EXIT_FAILURE;
    }

    namedWindow("Input", WINDOW_AUTOSIZE);
    namedWindow("Output", WINDOW_AUTOSIZE);

    imshow( "Input", src );


  	// 卷积核
    Mat kernel = (Mat_<char>(3,3) <<  0, -1,  0,
                                   -1,  5, -1,
                                    0, -1,  0);
  	// 采用图片卷积 ，进行锐化
    filter2D( src, dst, src.depth(), kernel );

    imshow( "Output", dst );

    waitKey();
    return EXIT_SUCCESS;
}
int main( int argc, char ** argv )
{
    
    
	mask(argc, argv);	//图片锐化
	return 0;
}

• 效果