在OpenCV中读取嵌套XML

Question

这个问题回答了如何用嵌套将数据写入XML文件:在OpenCV中创建XML文件

参考相同的问题(和可接受的答案)，我如何使用FileStorage类读取相同的文件?

简而言之，我如何读取下面代码段写入的数据?

FileStorage fs;  // Open it and check that it is opened;
fs << "SimpleData"  << 1;
fs << "Structure" << "{";
fs << "firstField"  << 1;
fs << "secondField"  << 2;
fs << "}"; // End of structure node
fs << "SimpleData2"  << 2;

Answer 1

您可以使用:

FileStorage fs;
fs.open(filename, FileStorage::READ);
int SimpleData = (int) fs["SimpleData"];
FileNode n = fs["Structure"];  // Read Structure sequence - Get node
int firstField = (int)(n["firstField"]);
int secondField = (int)(n["secondField"]);
int SimpleData2 = (int) fs["SimpleData2"];

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