What does accuracy mean in relation to the data?
Accuracy is a binary measure of correct or incorrect for a given observation. However, we can make statistical statements that something is accurate X percent of the time. It is common in remote sensing to apply this concept to derived products. To ensure the accuracy of the land cover data, Center staff conduct field verification of the data. In areas where the landscape is changing from one category to another, such as when a field gradually becomes scrub/shrub and eventually a forest, this process can be difficult. For the purpose of land cover mapping, a minimum mapping unit [defined term] is defined and the data are evaluated on the dominant vegetative cover for that area and compared to the digital map. An area is assessed as “accurate,” or correct, if the dominant land cover for the area was correctly identified from the satellite image. Landsat data have a 30-meter pixel size, which means that the predominant land cover within that 30 meters (.
Accuracy is a binary measure of correct or incorrect for a given observation. However, we can make statistical statements that something is accurate X percent of the time. It is common in remote sensing to apply this concept to derived products. To ensure the accuracy of the land cover data, Center staff conduct field verification of the data. In areas where the landscape is changing from one category to another, such as when a field gradually becomes scrub/shrub and eventually a forest, this process can be difficult. For the purpose of land cover mapping, a minimum mapping unit is defined and the data are evaluated on the dominant vegetative cover for that area and compared to the digital map. An area is assessed as “accurate,” or correct, if the dominant land cover for the area was correctly identified from the satellite image. Landsat data have a 30-meter pixel size, which means that the predominant land cover within that 30 meters (.25 acres) will be represented by one pixel. Howev
