Function load

czxing/src/main/cpp/include/opencv2/core.hpp:3190–3199

    FileNode& fn).
    */
    template<typename _Tp> static Ptr<_Tp> load(const String& filename, const String& objname=String())
    {
        FileStorage fs(filename, FileStorage::READ);
        CV_Assert(fs.isOpened());
        FileNode fn = objname.empty() ? fs.getFirstTopLevelNode() : fs[objname];
        if (fn.empty()) return Ptr<_Tp>();
        Ptr<_Tp> obj = _Tp::create();
        obj->read(fn);
        return !obj->empty() ? obj : Ptr<_Tp>();
    }

    /** @brief Loads algorithm from a String