1. Distance measurement method determining the distance of a sensor system to a physical object, comprising the steps of: obtaining, by a processing unit, from the sensor system, at least a pair of stereoscopic images including the physical object, applying, by the processing unit, to each element of at least a portion of a first image of the pair of stereoscopic images and to each element of at least a portion of a second image of the pair of stereoscopic images at least two differently shaped filters, respectively, wherein the filter refers to a number and an extension of elements that is regarded when determining whether a currently regarded element or area in/of one image part/patch is similar/identical to an element or area in/of another image part/patch, determining, by the processing unit, correlation values for each filter applied to the first and second image, determining, by the processing unit, combined correlation values for the applied filters by combining the determined correlation values for each applied filter, evaluating, by the processing unit, the combined correlation values for different disparities for an extremum value of the combined correlation values, calculating, by the processing unit, a distance value of the sensor system to the physical object based on a disparity value at which the extremum occurs, and outputting, by the processing unit, the distance value.