在OpenCV中读取嵌套XML

Question

此stackoverflow问题解答了如何使用嵌套将数据写入XML文件： Creating an XML file in OpenCV

参考同一个问题（和接受的答案），我如何使用FileStorage类读取同一个文件？

简而言之，我如何阅读以下代码段写入的数据？

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"];

查看here了解详情。