| 摘要 |
A system for classifying different types of sheeting materials of road signs (Fig.2, element 32, 34, 36) depicted in a videostream (Fig.2, element 52) compares estimated retroreflectivity values against known minimum retroreflectivity values for each of a plurality of colors (Fig.2, elements 40, 42, 44, 46 and 50). Once a road sign has been identified in the videostream, the frames associated with that road sign are analyzed to determine each of a plurality of colors present on the road sign. |
