scale bar per image type

[joefutrelle]

Display a scale bar based on which imager it came from (which can be generalized to "image type")

Requires that the model track image type, and that it be specified during import.

[mike-kaimika]

@joefutrelle We're looking for something like this image shows, right?

[joefutrelle]

Yes, and it would need to be scaled when the user zooms in or out on the ROIs