1. A method for producing a classifier for recognizing an obstacle, comprising: displaying, by a processor, surface data of a plurality of obstacles measured by a distance measurement sensor in a two-dimensional (2D) coordinate system; grouping and classifying, by the processor, the surface data displayed in the 2D coordinate system for each obstacle; setting, by the processor, a plurality of feature references to analyze region based features displayed for each obstacle in the 2D coordinate system and calculating the respective feature references for each obstacle; and producing, by the processor, the classifier by applying a weight to each of the feature references.