I have a polyline map which I extracted automatically and I want to compare it with another polyline map which I extracted manually in order to evaluate the accuracy of the automatic method. (my study area is not on Earth so there is no ground truth). Generally accuracy assessments is based on a confusion matrix and classes, but I don't have any classes here, they are two series of lines, which I want to see how close is the automatic polyline results to the manual one! I have only position of the lines, I can extract their length, sinuosity, orientation.
Any suggestion for accuracy assessment in this case?