四月的筆記

string file_name = "cat.jpg";

Mat frame0 = imread(file_name, IMREAD_GRAYSCALE);

vector<vector<double>> array_v2;

for (int i = 0; i < frame0.rows; i++)
{
    vector<double>array(frame0.row(i).data, frame0.row(i).data + frame0.cols);
    array_v2.push_back(array);
}