opencv矩阵的用法

矩阵的初始化及赋值

        cv::Mat grid1(5, 5, CV_32SC1, cv::Scalar(0));
		grid1.at(0, 0) = 1;   grid1.at(0, 1) = 1;
		grid1.at(2, 3) = 1;
		grid1.at(3, 4) = 1;  grid1.at(3, 3) = 1;
		grid1.at(4, 4) = 1;

矩阵指针的形式

        cv::Mat* grid3 = new cv::Mat (5, 5, CV_32SC1, cv::Scalar(0));
		(*grid3).at(0, 0) = 1; (*grid3).at(0, 1) = 1; (*grid3).at(0, 3) = 1;
		(*grid3).at(1, 0) = 1; (*grid3).at(1, 4) = 1;
		(*grid3).at(3, 0) = 1; (*grid3).at(3, 1) = 1; (*grid3).at(3, 2) = 1;
		(*grid3).at(4, 2) = 1; (*grid3).at(4, 4) = 1;```