Method of operating assistance system for determining length of object, computer program product, computer readable storage medium and assistance system

The invention relates to a method for operating an assistance system (2), in which method an object (9) is detected and classified by means of an electronic computing device (5) for further evaluation, the classification being used as a basis for a first length (L) of a predefined object (9), and in which the object (9) is additionally captured, evaluated and classified by means of a camera (4), a predetermined first length (L) of the object (9) is determined and a second length (L) of the object (9) is determined and the classification and the second length (L) are transmitted to the electronic computing device (5), in which the predetermined first length (L) is adjusted based on the second length (L) to produce a current length (L) and the limited Kalman filter (7) is used to update the current length (L), the limit of the Kalman filter (7) is predefined by the classification determined by means of the camera (4). The invention also relates to a computer program product, a computer readable storage medium a