grabcut mask

#include "opencv2/opencv.hpp"
using namespace cv;

void main()
{
    Mat src = imread("E:\\智能检测与图像处理\\3.jpg");
    //Rect rect(84, 84, 406, 318);
    Rect rect;
    Mat bgModel, fgModel;
    Mat result(src.size(), CV_8U, Scalar(0));
    Mat ROI(result(Rect(84, 84, 406, 700)));
    ROI.setTo(GC_PR_FGD);//ROI设置为可能是前景

    grabCut(src, result, rect, bgModel, fgModel, 1, GC_INIT_WITH_MASK);
    //threshold(result, result, 2, 255, CV_THRESH_BINARY);
    imshow("grab", result);
    compare(result, GC_PR_FGD, result, CMP_EQ);
    //result = result&1;
    imshow("result", result);
    Mat foreground(src.size(), CV_8UC3, Scalar(255, 255, 255));
    src.copyTo(foreground, result);//意思是可以得到一个附加掩膜result的矩阵foreground

imshow("foreground", foreground); waitKey(0); }