#include

#include

using namespace std;

using namespace cv;

/**

*opencv自带的掩膜操作API

*/

int test2()

{

Mat img1, img2, img3;

img1 = imread("D://images//4.jpg");

if (!img1.data)

{

cout << "图片不存在" << endl;

return -1;

}

namedWindow("win1", CV_WINDOW_AUTOSIZE);

imshow("win1", img1);

Mat kernel = (Mat_(3, 3) << 0, -1, 0, -1, 5, -1, 0, -1, 0);

filter2D(img1,img2,img1.depth(),kernel);

namedWindow("win2", CV_WINDOW_AUTOSIZE);

imshow("win2", img2);

//imwrite("6-2.jpg",img2);

}

int main()

{

int k2 = test2();

waitKey(0);

return 0;

}