prerequisite:
- Download 'model' folder of Superglue to working directory. (https://github.com/magicleap/SuperGluePretrainedNetwork)
- Crop HE from .SVS and convert to .tif
https://iipimage.sourceforge.io/documentation/images/
http://www.andrewjanowczyk.com/converting-an-existing-image-into-an-openslide-compatible-format/
