At least a portion of a wellsite is disposed in a control volume of three-dimensional space. At least one camera is configured to provide three-dimensional imaging of the control volume. At least one device is disposed in, or is expected to be moved into, the control volume so that the at least one device is included in the three-dimensional imaging when the at least one device is disposed in the control volume and the at least one camera provides the three-dimensional imaging. In an exemplary embodiment, the at least one camera is connected to a drilling rig.