triangulatePoints with moving monocamera

edit

well, I'm trying to use the function triangulatePoints in order to retrieve the depth of a point. First, i'm adopting this process not using a stereo ring but a monocamera: the camera is moving in the environment and I select two frames and a point present in both of them (of course I know the position of the camera at any time). Assuming that this procedure is correct, I am wondering to which camera frame the 3d point output of the mentioned function is referred.