Ground Truthing and Accuracy Assessment

Module 4 of Remote Sensing, covered Ground Truthing and Accuracy Assessment.  For this project we used the LULC map from last weeks module, and since actually going to the site and verifying the accuracy of our LULC assessment was not feasible, Google maps street view was used.  First I selected 30 random points within the study area. Then using Google maps I located these exact points, and zooming to the street view I was able to verify if, in fact, my assessment of that particular point was correct.  Once this was complete I calculated the overall accuracy of LULC Assessment.  In this case, of the 30 points that were checked, three were found to be incorrectly identified resulting in an overall accuracy of 90%.