Hi @karthikreddy157,
I would recommend you take a look at our documentation and samples related to the integration of GNSS in the ZED SDK, in order to retrieve the global GNSS position of a camera with external GNSS input from the ZED Box.
Once you have ingested the GNSS data in the ZED SDK, please see this forum post that covers what you wish to accomplish: How to get GPS coordinates (WGS84) of detected object - #8 by mattrouss