A method for determining a calibration parameter for a stereo camera integrated in a vehicle, in which a relative movement of the stereo camera relative to a further object is analysed, the object being a stationary object, wherein with the aid of the stereo camera object images of the object are captured at least twice in succession at a time interval, wherein with the aid of the captured object images, the distance between the stereo camera and the object is determined each time, wherein the actual change in distance or the actual speed between the stereo camera and the object is determined, wherein the actual change in distance between the stereo camera and the object is determined with the aid of a system that is independent of the distance measuring system of the stereo camera, wherein with the aid of the determined distances an apparent change in distance or an apparent speed between the stereo camera and the object is determined, wherein dependent on the deviation between the apparent change in distance and the actual change in distance or dependent on the deviation between the apparent speed and the actual speed at least one calibration parameter for determining further distances relative to the object and/or to further objects is determined with the aid of object images captured by the stereo camera, and wherein the object transmits its position via a communication network to a transmitting and receiving unit of the vehicle, wherein the vehicle comprises a receiving and evaluating unit for a navigation system, wherein, as a result of the knowledge of the positions in space of the vehicle and of the stationary object, the actual change in distance or the actual speed between the stereo camera and the object is determined, and wherein the communication network and the navigation system are part of the independent system. in which a relative movement of the stereo camera relative to a further object is analysed, the object being a stationary object, wherein with the aid of the stereo camera object images of the object are captured at least twice in succession at a time interval, wherein with the aid of the captured object images, the distance between the stereo camera and the object is determined each time, wherein the actual change in distance or the actual speed between the stereo camera and the object is determined, wherein the actual change in distance between the stereo camera and the object is determined with the aid of a system that is independent of the distance measuring system of the stereo camera, wherein with the aid of the determined distances an apparent change in distance or an apparent speed between the stereo camera and the object is determined, wherein dependent on the deviation between the apparent change in distance and the actual change in distance or dependent on the deviation between the apparent speed and the actual speed at least one calibration parameter for determining further distances relative to the object and/or to further objects is determined with the aid of object images captured by the stereo camera, and wherein the object transmits its position via a communication network to a transmitting and receiving unit of the vehicle, wherein the vehicle comprises a receiving and evaluating unit for a navigation system, wherein, as a result of the knowledge of the positions in space of the vehicle and of the stationary object, the actual change in distance or the actual speed between the stereo camera and the object is determined, and wherein the communication network and the navigation system are part of the independent system.