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#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/gapi.hpp>
#include <opencv2/gapi/core.hpp>
#include <opencv2/gapi/imgproc.hpp>
int main(int argc, char *argv[])
{
(void) argc;
(void) argv;
using namespace cv;
Mat in_mat = imread("lena.png");
Mat gx, gy;
Sobel(in_mat, gx, CV_32F, 1, 0);
Sobel(in_mat, gy, CV_32F, 0, 1);
Mat mag;
sqrt(gx.mul(gx) + gy.mul(gy), mag);
Mat out_mat;
mag.convertTo(out_mat, CV_8U);
imwrite("lena-out.png", out_mat);
return 0;
}
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