Tuesday, September 26, 2017

Photo Interpretation and Remote Sensing Module 4

This week we learned about using ground truthing to confirm land cover/land use classifications, and about calculating the accuracy of an LULC map base on ground truthing. Since we couldn't actually visit our sample sites for the lab assignment, we used Google Maps and Google Street View to confirm/correct classifications. Below is my map from last week, overlain with "ground truthing" points color-coded according to whether or not my original classification was correct at that location. Some points were more of a challenge to identify than others, particularly a few that had obviously changed between the time the photo was taken and the time the Google Maps imagery was last updated.


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