Location Detection from CCTV

When CCTV cameras detect some events like people or objects detection, it is often required that the actual event spot on world map be estimated because the event occurrence spot is restricted to each camera’s view. The actual spot is projected on each camera view, so each has the different projected point of the event spot. Of course, it is also possible for the spot not to be projected in some cameras’ view. Mostly, in this case, the graphics library such as OpenGL can be helpful, but I want to implement this without graphics libraries.
Requirement
World Map to Camera And Vice Versa

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