text: Title: [Documentation Question] Upsizing segmentation masks
  Body: I'm curious how a type uint segmentation mask is able to be resized larger. The only method that makes sense to me would be KNN, but the docs say, "Note that segmentation maps are handled internally as heatmaps (one per class) and as such can be resized using cubic interpolation." 
  
  But wouldn't cubic interpolation fill intermediate pixels with float values instead of only using the integer values present in the original mask?