jpx_target::access_meta_manager

Call this function any time after a call to open to gain access to the infrastructure used to manage metadata which is not directly related to image interpretation. See the description of jpx_meta_manager and (first) jpx_metanode to learn more about the management structure, and what metadata is actually managed.

For many applications, the function jpx_meta_manager::insert_node, in conjunction with jpx_metanode::add_label and jpx_metanode::add_delayed provide most of the funcionality required to build rich metadata descriptions.

See write_metadata for more on the actual writing of metadata to the output file.

Note that the interface returned via the present function ceases to be valid once close is called.