如何一起读取视频帧和.csv文件行

Question

对于某些人来说，这可能是一个琐碎的问题。但是我有几天的怀疑了。我必须逐帧读取视频文件。 .csv文件包含有关其相应行中的帧的信息。

我想在单个循环中组合下面的代码，即视频和.csv文件的读取，以使帧的相应信息在各行中保存有正确的信息。

//1. This is used for reading a video file frame by frame
for (;;) {
        auto pair = video->Read();
        cv::Mat frame = pair.first;
        int frame_idx = pair.second;

        if (frame.empty()) break;
        ......
      }



//2. This is for reading a csv file line by line 
fstream fin; 
// Open an existing file 
fin.open("reportcard.csv", ios::in); 
// Read the Data from the file as String Vector 
vector<string> row; 
string line, word, temp; 
 while (fin >> temp)
    {  
     row.clear(); 
    // read an entire row and 
    // store it in a string variable 'line' 
    getline(fin, line); 
    // used for breaking words 
    stringstream s(line); 
    // read every column data of a row and store it in a string variable, 'word' 
    while (getline(s, word, ', ')) 
        {
        // add all the column data 
        // of a row to a vector 
         row.push_back(word);
        }   

    // Print the found data 
     cout << "Frame number " << row[0] << "\n"; 
     cout << "Detail 1: " << row[1] << "\n"; 
     cout << "Detail 2: " << row[2] << "\n"; 
     cout << "Detail 3: " << row[3] << "\n";  
     } 

实现此任务的最有效方法是什么？任何建议和帮助将不胜感激。预先感谢。

Answer 1

如果您的数据以相同的顺序到达，则可以只合并两个循环的主体。