如何將3D向量轉換爲cv :: Mat

Question

我想從浮動向量（vGraph1）的3D向量中填充OpenCV Mat（float）。但是，由此產生的OpenCV Mat（測試）未正確填充，即只有第一列填充了正確的值，其餘爲垃圾值（-4.32e + 08）。我通過將文字寫入文本文件來確認錯誤。難道我做錯了什麼？ 親切的建議。 謝謝。

int nStates = 9; const int rows = 10; const int cols = 10; 
vector < vector < vector<float> > > vGraph1; 
for(int iii = 0; iii < rows; iii++){ 
    vGraph1.push_back(vector<vector<float> >()); 
    for(int jjj = 0; jjj < cols; jjj++){ 
     vGraph1[iii].push_back(vector<float>()); 
     for(int kkk = 0; kkk < nStates; kkk++){ 
      vGraph1[iii][jjj].push_back(rand()); 
      cout << vGraph1[iii][jjj][kkk] << " "; 
     } 
     cout << endl; 
     } 
    } 
cout << "OpenCV Mat \n" << endl; 
Mat test(rows, cols, CV_MAKE_TYPE(CV_32F, nStates)); 
for(int iii = 0; iii < rows; iii++){ 
    float *ptest = test.ptr<float>(iii); 
    for(int jjj = 0; jjj < cols; jjj++){ 
     for (int kkk = 0; kkk < nStates; kkk++){ 
      ptest[kkk] = vGraph1[iii][jjj][kkk]; 
      cout << ptest[kkk] << " "; 
     } 
     cout << endl; 
    } 

} 
FileStorage Save("Mat.txt", FileStorage::WRITE); 
Save << "Node" << test; 
Save.release(); 

Answer 1

我設法得到以下工作解決方案;我希望這是正確的？

int nStates = 9; const int rows = 10; const int cols = 10; 
vector < vector < vector<float> > > vGraph1; 
for(int iii = 0; iii < rows; iii++){ 
    vGraph1.push_back(vector<vector<float> >()); 
    for(int jjj = 0; jjj < cols; jjj++){ 
     vGraph1[iii].push_back(vector<float>()); 
     for(int kkk = 0; kkk < nStates; kkk++){ 
      vGraph1[iii][jjj].push_back(rand()); 
      cout << vGraph1[iii][jjj][kkk] << " "; 
     } 
     cout << endl; 
     } 
    } 
cout << "OpenCV Mat \n" << endl; 
Mat test(rows, cols, CV_MAKE_TYPE(CV_32F, nStates)); 
for(int iii = 0; iii < rows; iii++){ 
    float *ptest = test.ptr<float>(iii); 
    for(int jjj = 0; jjj < cols; jjj++){ 
     for (int kkk = 0; kkk < nStates; kkk++){ 
      ptest[nStates*jjj + kkk] = vGraph1[iii][jjj][kkk]; 
      cout << ptest[nStates*jjj+kkk] << " "; 
     } 
     cout << endl; 
    } 

} 

FileStorage Save("Mat.txt", FileStorage::WRITE); 
Save << "Node" << test; 
Save.release();