Land Cover Land Use and Truthing

    In this week's lab, I had to determine the land use of Pascagoula, Mississippi from an aerial photograph. I then had to go through the process of truthing, which means to verify the land use of a specific location. For the first part of the lab, I organized polygons into different land use types, based off what I could tell from the aerial photograph. In the second part of the lab, I chose 30 random points within those polygons and used Google Maps to determine if I was correct in my initial predictions. Truthing is normally done in person, but Google Maps has become a useful tool for GIS analysts who work remote. This type of ground truthing is called image data truthing, because an image was used to make the initial assessment. 

 

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