Using satellite image-based maps and ground inventory data to estimate the area of the remaining Atlantic forest in the Brazilian state of Santa Catarina

► Four forest/non-forest maps were compared for accuracy. ► A large, independent accuracy assessment dataset was acquired. ► Accuracies were similar, but estimated biases were dissimilar. ► Confidence intervals were constructed for estimates of proportion forest cover. ► Variance estimates were reduced using a model-assisted regression estimator.