數據類型轉換——Mat類與Vector族類

1、Mat —> vector or vector：用“Mat_”,“Mat_”

Mat m;
vector<Point3f> p;
p = Mat_<Point3f>(m);

2、vector or vector —> vector<vector> or vector<vector>: 用“.push_back()”，比較簡單，例略。
3、vector<vector> or vector<vector> —>Mat

vector<vector<Point3f>> p;
Mat pm((int)p.size(), p[0].size(),CV_32FC3);

for(int i = 0;i<(int)p.size();i++)
{
	Mat r = pm.row(i).reshape(3,pm.cols);
	Mat pm1(p[i]);
	pm1.copyTo(r);
}

4、vector or vector —> Mat：用“Mat(Point3f)”

vector<Point3f> p;
Mat m = Mat(p);