A rotating platform having a plurality of stalls is provided, each of the stalls being configured to house a respective animal during milking. The stalls are separated from one another by delimiting structures. A camera registers three-dimensional image data of the rotating platform within a field of view. A controller receives the image data that has been registered while the rotating platform completes at least one full revolution around its rotation axis. The controller processes the image data to derive a set of key features of the rotating platform, and then stores the set of key features in a data storage, which is configured to make the set of key features available for use at a later point in time.