Module 4: Ground Truthing and Accuracy Assessment

A map depicting accuracy proofing of LULC data of Pascagoula, MS. 

This lab involved truthing a Land Use Land Cover (LULC) classification map which was generated last week.  Ground truthing was done ex situ using Google StreetView of the area.  Much of the area was inaccessible from StreetView (western marshes) and were truthed using high resolution aerial imagery.

The overall accuracy is determined by comparing random points placed on the original LULC map to those same points found in Google StreetView or aerial imagery.  The overall accuracy of the LULC is determined by the number of "true" points divided by the total points.  The accuracy of my LULC map was 77%.