Patent Document ID: 9335255
Application ID: 14512735
Patent Status: 1

Claim One:
1. An automated method for classifying a reflective road marker having at least one color comprising: using a light source to illuminate at least a portion of the reflective road marker as the light source is traversed along a roadway; collecting a plurality of light intensity measurements reflected from the at least a portion of the reflective road marker, the light intensity measurements corresponding to exemplary angular displacements of incident light from a reference position; providing a database of retroreflectivity profiles, each retroreflectivity profile having an associated known road marker type having a known color; and using a computer processing system configured to: generate an as-measured retroreflectivity profile based on the plurality of light intensity measurements; select at least one retroreflectivity profile from the database of retroreflectivity profiles that correlates to at least a portion of the as-measured retroreflectivity profile; determine a road marker type from a set of road markers that is associated with the selected at least one retroreflectivity profile; and classify the road marker according to the color associated with the determined road marker type.