给图像添加边界

#include<iostream>#include<opencv2/imgproc/imgproc.hpp>#include<opencv2/highgui/highgui.hpp>using namespace std;using namespace cv;Mat src, dst;int top, buttom, left1, right1;Scalar value;int borderType;RNG rng(12345);char* window_name = "copyMakeBorder Demo";int main(){src = imread("奥巴马.jpg");if (!src.data){cerr << "Can't open the image!" << endl;return EXIT_FAILURE;}int c;namedWindow(window_name);top = (int)(0.05*src.rows);buttom = (int)(0.05*src.rows);left1 = (int)(0.05*src.cols);right1 = (int)(0.05*src.cols);dst = src;imshow(window_name, dst);while (true){c = waitKey(500);if ((char)c == 27){break;}else if ((char)c == 'c'){borderType = BORDER_CONSTANT;}else if ((char)c == 'r'){borderType = BORDER_REPLICATE;}value = Scalar(rng.uniform(0, 255), rng.uniform(0, 255), rng.uniform(0, 255));copyMakeBorder(src, dst, top, buttom, left1, right1, borderType, value);imshow(window_name,dst);}return 0;}