A method for controlling a driver assistance system by using a stereo camera system having a first and a second camera, the method having a step of reading in, a first image being read in from the first camera and a second image being read in from the second camera. The method furthermore comprises a step of forming, a cost function being generated by using the first and the second image. Furthermore, in a further method step of determining, a frontoparallelity parameter representing the frontoparallelity of an object with respect to the stereo camera system is determined by using a global minimum of the cost function. Finally, the method comprises a step of using, the frontoparallelity parameter being used to control the driver assistance system.