The number of field-collected, digitized from image interpreation, and total reference points (and intersecting pixels) for each vegetation class.

The number of field-collected, digitized from image interpreation, and total reference points (and intersecting pixels) for each vegetation class.

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Detecting newly established invasive plants is key to prevent further spread. Traditional field surveys are challenging and often insufficient to identify the presence and extent of invasions. This is particularly true for wetland ecosystems because of difficult access, and because floating and submergent plants may go undetected in the understory...

Context in source publication

Context 1
... combining the digitized reference data with the field-collected ground reference data, we extracted pixel values of all raster bands to the intersecting point locations (for both datasets) to serve as predictor variables for further classification. The final sample size was greater than 50 points per class in the 11 cm dataset (N = 249) and for the 3 cm dataset (N = 229, Table 3). We then used the respective RGB orthomosaics to confirm each point as one of the three primary vegetation classes (while also distinguishing the two floating sub-classes). ...