sisted recognition of surface materials. The process assigns individual pixels of an image to
categories (e.g. vegetation, road) based on spectral characteristics compared to spectral characteristics of known parts of an
image (training areas). [Sciences] 
n., Any scheme for structuring data that is used to group individuals. [Sciences] 
n., The systematic identification and arrangement of documents in categories according to logically structured conventions,
methods and procedural rules represented in a cl