Is it possible to locate objects in an image in the global reference frame (e.g. ECEF) using only a GPS (offset from the camera) ? The problem I see is that in order to take into account the offset distance between GPS antenna phase center, an IMU integrated with the GPS is necessary to compute the platform (Camera + GPS) rotation with respect to the NED/ENU frame. This will allow the use of collinearity equation to compute the location of the object in FOV in ECEF.
The question I have, because the platform does not have an IMU, only the GPS, I wanted to see if it’s possible to compute object location in ECEF only from the GPS of the platform. It is possible if one assumes the camera projection center is collocated with an antenna, but that is not the case, the offset distance does affect the estimation of the object location in global reference frame
Any ideas ?!