I think this is a good point. The only gotcha would appear to be handling the ImageObserver notifications and the
prepareImage() calls.
The ImageObserver should get the variant's dimensions as one of the first notifications, though if they trigger an image
load and then add an observer later,
Hi,
When the application is specifying the set of images from which
to build the MRI you ask the app to specify a "schema" (probably not the
right name given that it is per-file), and a floating point scale.
I don't see why we need to ask the app to name the files
in accordance with our schema
