How can I read from an XML-string in OpenCV?

[master_tz]

I know how to load/save a cv::Mat instance into a XML-file (See this question).But what I really need, is to parse a \[code\]std::string\[/code\] (or \[code\]char *\[/code\]) that contains the XML, and get the cv::Mat. Say I get the XML out of a database, and not from a file.Is that possible?